Intensive care units (icus) generally treat the sickest patients in a hospital. icus are often the most expensive department in a hospital because of the specialized equipment and extensive training required to be an icu doctor or nurse. therefore, it is important to use icus as efficiently as possible in a hospital. according to a large-scale study of elderly icu patients, the average length of stay in the icu is days (critical care medicine journal article). assume that this length of stay in the icu has an exponential distribution. do not round intermediate calculations.

Answers

Answer 1

a. Probability that the length of stay in the ICU is one day or less is:0.2614.

b. Probability that the length of stay in the ICU is between two and three days is:0.1426

c. Probability that the length of stay in the ICU is more than five days is:0.2198.

Probability

a. Probabilty of one day or less.

Using this formula

P(X≤1)=1-e^-ux

Since mean is 3.3 the decay parameter is:

u=1/3.3

Hence:

P(X≤1)=1-e^-1/3.3

P(X≤1)=1-e^-0.3030

P(X≤1)=1-0.7385991

P(X≤1)=0.2614

b. Probability of two and three days.

P(X≤2)=1-e^-ux

P(X≤2)=1-e^-2/3.3

P(X≤2)=1-e^-0.60606

P(X≤2)=1-0.54549589

P(X≤2)=0.45450

P(X≤3)=1-e^-ux

P(X≤3)=1-e^-3/3.3

P(X≤3)=1-e^-0.909091

P(X≤3)=1-0.402890

P(X≤3)=0.59711

Hence:

P(2≤X≤3)=0.59711-0.45450

P(2≤X≤3)=0.1426

c. Probability of more than 5 days.

P(X≤5)=e^-ux

P(X≤5)=e^-5/3.3

P(X≤5)=e^-1.515152

P(X≤5)=0.219775

P(X≤5)=0.2198 (Approximately)

Inconclusion the probability that the length of stay in the ICU is one day or less is:0.2614.

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Related Questions

If you were a forensic scientist and you were called to a crime scene to see if drugs were present, what would you do to determine this?

Answers

If I were a forensic scientist and asked to identify drugs at a crime scene, you would take samples where residue is likely to be present.

What is a crime scene?

A crime scene is a term used to refer to the location where a crime occurs and the arrangement of evidence to determine how events related to the crime occurred at that location.

What is a sample?

A sample is a tool used in forensic investigation to determine the existence of an element or substance at a crime scene.

For example, in this case we can take samples from the corpse's hands, nose and mouth to determine if he used drugs prior to his death.

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On the map 5th ave. 6th ave. and 7th ave. are parallel

Answers

The length of Main St. between 5th Ave. and  6th Ave Round to the nearest hundredth is; 0.24 km

How to use triangle proportionality theorem?

From the image attached, we are given that 5th Avenue is parallel to 6th avenue.

Now, Let the length of main street between 5th and 6th Avenue be x.

By using the triangle proportionality theorem, we have;

0.4/x = 0.5/0.3

Thus;

x = (0.4 * 0.3)/0.5

x = 0.24 km

In conclusion, the length of street is 0.24 km

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What is the sequence of transformations that maps δpqr onto δp’q’r’? use the drop-down menus to explain your answer. triangles p q r and p prime q prime and r prime on a coordinate plane. the smaller triangle has coordinates p negative 1 comma 1, q negative 2 comma 3, and r negative 2.5 comma 1. the larger triangle has coordinates p prime 2 comma 2, q prime 4 comma 6, and r prime 5 comma 2. a dilation with center (0, 0), a scale factor choose... , and a reflection across the choose... .

Answers

The sequence of transformation is:

a dilation with center (0, 0), a scale factor 2, and a reflection across the y-axis

How to determine the sequence of transformation?

The coordinates are given as:

p = (-1, 1)

q = (-2, 3)

r = (-2.5, 1)

p' = (2 , 2)

q' = (4, 6)

r' = (5, 2)

Start by reflecting the triangle pqr across the y-axis.

The transformation rule is:

[tex](x,y) \to (-x,y)[/tex]

So, we have:

p = (1, 1)

q = (2, 3)

r = (2.5, 1)

Dilate the resulting by a scale factor of 2 with the center of (0, 0)

The transformation rule is:

(x,y) = 2(x,y)

So, we have:

p' = (2 , 2)

q' = (4, 6)

r' = (5, 2)

Hence, the sequence of transformation is:

a dilation with center (0, 0), a scale factor 2, and a reflection across the y-axis

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A 20.0-ml sample of a 0.200 mhbr solution is titrated with a 0.200 mnaoh solution. calculate the ph of the solution after the following volumes of base have been added.

Answers

The calculated pH of the solutions are given below:

The pH of the solution after 14.0 ml of base is added to it is calculated as 1.45. The pH of the solution after 19.8 ml of base is added to it is calculated as 3.0The pH of the solution after 20.0 ml of base is added to it is calculated as 7.

What is pH?

This is the level of acidity or alkalinity of an aqueous solution. The pH of a substances tells if its an acid, base or neutral.

HBr and NaOH while in water would dissociate and they would become H+ and OH- respectively.

Mol of HBr = Mol * Vol

= 0.200 * 20mL

= 4 mmol

A. Moles of NaOH added

= 0.2 X 14

= 2.8 mmol

Moles of H+ that did not react

= 4 - 2.8

= 1.2 mmol

1.2/1000 = 0.0012 moles

Total volume = 20 + 14

= 34 mL to litres

= 0.034 L

Molarity of H+ = 0.0012 / 0.034L

= 0.035 M

-log[0.035] = 1.45

The pH of the solution is  1.45

B. NaOH added = 19.8 * 0.2 =

3.96 mmoles

The unreacted solution

= 4.0 - 3.96

= 0.04 mmol

0.04/1000 = 0.00004 moles

Total volume = 20 + 19.8

= 39.8mL

Converted to litres = 0.0398L

Molarity  = 0.00004 / 0.0398L

= 0.001

-log(0.001) = 3.0

The ph Is therefore 3.0

C. Moles of NaOH added = 0.2*20mL = 4mmol

All the H+ are going to be consumed here. This would result into a neutral solution pH = 7

Complete question:

20.0 mL sample of 0.200 M HBr solution is titrated with 0.200 M NaOH solution. Calculate the PH of the solution after the following volumes of base have been added.

A. 14.0 mL

B. 19.8 mL

C. 20.0 mL

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For an​ ellipse, the foci lie on a line called the

Answers

Answer: Axis of symmetry

Thomas calculus early transcendentals 14th edition solutions

Answers

There are different kinds of textbooks. The Thomas calculus early transcendentals 14th edition is made for student who are interested in calculus.

What is Thomas calculus early transcendentals 14th edition about?

The Thomas' Calculus that is known as the Early Transcendentals is one that has been design for students so that they can be able to reach the level of mathematical proficiency and maturity very fast and one that is require.

The early transcendentals cover topics such as  polynomials, rational functions, exponentials, logarithms, and others. It helps students to know more about calculus.

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Determine whether the set of vectors is orthogonal

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I don't see any other part of the problem, but to determine whether the vectors are orthogonal, the dot product has to equal zero.

Hope that helps!

How many boxes in a stack that is 4 wide and 5 high

Answers

A stack represents its data using the principle of LIFO on its width and height

There are 20 boxes in the stack

How to calculate the number of boxes?

The given parameters are:

Width = 4

Height = 5

The number of box (n) is calculated using

n = Width * Height

So, we have:

n = 4 * 5

Evaluate the product

n = 20

Hence, there are 20 boxes in the stack

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What details can be observed in the painting? select 3 options. an unclean floor injured men surgical tables dazed expressions concerned relatives

Answers

The following details can be observed in the painting:

An unclean floor.Injured menDazed expressions

What is a painting?

A painting can be defined as an artwork that is typically used by an artist to express and depict an idea or thought about a place, thing, people, etc.

In this scenario, the painting is titled "L’Ambulance de la Gare de Poitiers" and it was drawn by Henri Gervex to describe some injured men who were sitting in an unclean floor and they look dazed.

In conclusion, the following details can be observed in the painting attached in the image below:

An unclean floor.Injured menDazed expressions

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Answer: an unclean floor (1), injured men (2), dazed expressions (4)

Explanation:

Drag the labels to show how the glucose and hormone levels will change in each mouse after they are joined by parabiosis. labels may be used once, more than once, or not at all

Answers

The labels that will show how the glucose and hormone levels will change in each mouse after they are joined by parabiosis are:

Those of db/db are:

The glucose level: stays the same.The hormone level: decreases.

Those joined by parabiosis which are Wild type:

Glucose level: stays the sameHormone level: decreases

What is the use of parabiosis to evaluate hormone function?

Parabiosis is known to be a useful and effective tool to examine hormone function.

This is b because it allows the exchange of long-lived molecules (such as hormones) to take place between the two joined organism. Therefore, the glucose levels of each mouse can stay the same, but the hormone levels will be altered.

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Calculate the number of moles contained in 550. ml of carbon dioxide at stp.

Answers

Considering the definition of STP conditions, 0.02455 moles are contained in 550 mL of carbon dioxide at STP.

Definition of STP condition

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

Amount of moles contained in 550 mL

In this case, you can apply the following rule of three: if by definition of STP conditions 22.4 liters are occupied by 1 mole of helium, 0.550 L (0.550 L= 550 mL, being 1 L= 1000 mL) are occupied by how many moles?

[tex]amount of moles=\frac{0.550 Lx 1 mole}{22.4 L}[/tex]

amount of moles= 0.02455 moles

Finally, 0.02455 moles are contained in 550 mL of carbon dioxide at STP.

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A security camera in a neighborhood bank is mounted

Answers

Answer:

To keep an eye on where you live... To keep your neighborhood safe...

Explanation:

I hope this helps you! :)

How many molecules of no2 can be formed using 2 molecules of no

Answers

The number of molecules of NO₂ that can be obtained when 2 molecules of NO react is 2 molecules

Balanced equation

We'll begin by writing the balanced equation for the reaction. This is given below:

NO + O₂ —> NO₂

There are 3 atoms of O on the left side and 2 atoms on the right side. It can be balanced by writing 2 before NO and NO₂ as shown below

2NO + O₂ —> 2NO₂

Now, the equation is balanced

From the balanced equation above,

We can see that 2 molecules of NO will react to produce 2 molecules of NO₂.

Thus, we can conclude that 2 molecules of NO₂ will be obtained from the reaction.

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If you travel 300 km in 6 hours what is your average speed

Answers

[tex]\qquad\qquad\huge\underline{{\sf Answer}}♨[/tex]

Average speed is defined as total distance covered by total time taken ~

[tex]\qquad \sf  \dashrightarrow \: \dfrac{total \: distance}{total \: time} [/tex]

[tex]\qquad \sf  \dashrightarrow \: \dfrac{300}{6} [/tex]

[tex]\qquad \sf  \dashrightarrow \:50 \: \: kmph[/tex]

What can be inferred from the excerpt? nonstandard forms of english can be as effective as the standard form of english. nonstandard forms of english limit a speaker’s ability to stand up for herself. nonstandard forms of english make communication difficult between cultures. nonstandard forms of english are used more by older adults than by younger adults.

Answers

The statement 'nonstandard forms of English can be as effective as the standard form of English' can be extracted in the excerpt from "Mother Tongue".

What is a mother tongue?

A mother tongue refers to a special language spoken by society and adopted as its own by its habitants.

There are many countries around the world that adopted English as their mother tongue and expressions in such countries may be certainly effective.

Mother tongue makes also reference to the language which an individual speaks from his/her childhood.

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Answer: A

Explanation: on edge

You want to restrict the values entered in a cell to a specific set such as hop skip jump

Answers

The list is the best data validation that you should use if you want to restrict the values to a specific set.

What is data validation in a spreadsheet?

This is a feature in a spreadsheet such as excel that helps to control the entries that the users are allowed to input in  a cell.

You can use this excel feature to ensure that a value is a number that is between 1 and 5.

Complete question:

You want to restrict the values entered in a cell to a specified set, such as hop, skip, jump. Which type of data validation should you use?

database

list

input range

custom

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Because factories were usually located in cities, industrialization went hand-in-hand with –. the industrial economy helped create robust growth in the united states for many decades. plentiful manufacturing and industrial jobs meant that – could enter the job market making a good wage. but as the economy began to transform once more, from an industrial to a postindustrial system, the nature of work changed as well. – led to a decline in manufacturing jobs: with about – jobs lost since 1980

Answers

The up-menu list for the sentence which explains the industralization and its impact on the economy includes:

urbanizationhigh school graduatesOffshoring7.5 million

What is industralization?

An industralization means the development of industries in a region which plays an instrumental role in the economic development of the world

Correct drop-downs includes:Industrialization went hand-in-hand with urbanization.

The industrial economy helped create robust growth in the united states for many decades. plentiful manufacturing and industrial jobs meant that high school graduates could enter the job market making a good wage.

But as the economy began to transform once more, from an industrial to a postindustrial system, the nature of work changed as well.

Offshoring led to a decline in manufacturing jobs: with about 7.5 million jobs lost since 1980.

In conclusion, the emergence of Industrialization is an imporant event that impact the world economy at large.

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Mr. red's first year salary is $30,000 and it increases by $500 each year. what is the explicit rule for this sequence in simplified form?

Answers

The explicit rule to describe the behaviour of the salary is given as

Nth Year Salary = 30,000+ 500n

Word Problem

Given Data

First year Salary =  $30,000Yearly Increase =  $500

Let the number of years be n

Hence the explicit rule for this scenario is given bellow as

Nth Year Salary = 30,000+ 500^n

So for the first year n = 1 the salaary

Nth Year Salary = 30,000+ 500n

Nth Year Salary = 30,500

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An experiment was carried out to compare electrical resistivity for six different low-permeability concrete bridge deck mixtures. there were 26 measurements on concrete cylinders for each mixture; these were obtained 28 days after casting. the entries in the accompanying anova table are based on information in an article. fill in the remaining entries. (round your answer for f to two decimal places.)

Answers

Assuming  there were 26 measurements on concrete cylinders for each mixture. Alternative Hypothesis at α=0.01 will be rejected.

Hypothesis

Electrical resistivity(I)=6

Concrete cylinder measurement(J)=26

First step

Degree of freedom for  SSb=I-1=(6-1)=5

Degree of freedom for SSw=I(1-J)=6(1-26)=150

Degree of freedom for SSr=IJ-1=(6×26)-1=155

Second step

Mean square(MSw)=13.929

SSw=MSw×I(J-1)

SSw=13.929×150

SSw=2,089.35

Third step

SSb=SSt-SSw

SSb=5,664.415-2,089.35

SSb=3,575.065

Fourth step

MSb=SSb(I-1)

MSb=3,575.065/(1-6)

MSb=3,575.065/5

MSb=715.013

Fifth step

F=MSb/Msw

F=715.013/13.929

F=51.33

The complete table is:

Source   df      Sum of squares       Mean square      F

Mixture    5         3,575.065                715.013              51.33

Error        150       2,089.35                 13.929

Total       155       5664.415

Therefore, since 51.33 is greater than 11.97 we are going to reject the hypothesis at α=0.01.

Inconclusion Hypothesis at α=0.01 will be rejected.

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Mushrooms are multicellular living organisms. what do cells of mushrooms need to function?

Answers

The cells of the mushrooms need water and waste to function.

Lesson 4.1 practice c geometry answers mcdougal littell

Answers

Lesson 4.1 practice c geometry question is below: What is the classification of the angle (Image attached.)

What is Lesson 4.1 practice geometry about?

This is known to be a textbook that was written as McDougal Littell Geometry.  It is regarded as a Practice Workbook  and it was the 1st Edition.

The classification of the angle is known as an acute angle. Note that an Acute angles is one that is known to be less than 90 degrees.

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Review of peter Sykes please.​

Answers

Answer:

PETER SYKES is good book which you can definitely refer but you can not entirely rely on this book for your theory as theory in this book containing JEE syllabus is so brief that is hard to understand at once. I personally referred this book rather than SOLOMONS, because I was already in comfort with the organic chemistry and my class notes was enough for me. But our teacher asked us to read this book in general to get better insight on the topics. But if you are not comfortable at the basics itself than this book is not for you definitely, you can use another books like paula yurkaniis bruce, solomons etc. And for questions both MS chouhan and Akshay choudhary is good.

The answer is ion know dude I’m stressin myself

Ad←→ is tangent to circle b at point c. what is the measure of ∠bca? 40º 50º 90º 180º circle b with radius b c. line tangent to chord c has points d a c in that order. segments are drawn from the center to each point

Answers

Answer:

90

Explanation:

I took the test for it

Answer:90 degrees

Explanation:

it looks like a 90 degree angle ☠️

which of the following types of drugs would not be appropriate for a patient with chronic asthma?

Answers

An asthmatic patient is a patient whose medical condition is termed asthma

Drugs a patient with chronic asthma should avoid

The asthma condition causes the patient the following medical conditions:

CoughDifficulty in breathingWheezing

A patient with a chronic asthma must avoid drugs that can aggravate the above conditions.

Some of these drugs are:

Aspirin.PainkillersNon-steroidal anti-inflammatory drugs

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Verify that the function satisfies the hypotheses of the mean value theorem on the given interval 4

Answers

Answer:

Step-by-step explanation

See attachment(s) with explanation below.

Explanation:

Calculate the solubility at of in pure water and in a solution. you'll find data in the aleks data tab. round both of your answers to significant digits

Answers

The solubility of a substance in water tells us the extent to which the substance can dissolve in water

What is solubility?

The solubility of a solute is the extent to which the solute can dissolve in a solvent. There are several units used to express solubility of a solute. This question is incomplete as the data is missing.

However, the solubility of a substance in water tells us the extent to which the substance can dissolve in water.

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Giant kelp which can grow up to 60 meters are known as jiskha

Answers

Giant kelp which can grow up to 60 meters are protist.

How many meters can giant kelp grow?

It can grow as much as 53 m. Note that Giant kelp often grow to about 100 feet (30 m) and its limits in terms of lengths is about 175 feet (53 m).

Macrocystis pyrifera is known to be a type of a fastest-growing organisms that can be seen on Earth whose length is about 45 m (150 ft).

See full question

Giant kelp, which can grow up to 60 meters, are known as (1 point)

vascular plants.

protists.

nonvascular plants.

fungi.

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Giada is at an extracurricular activity fair for her high school and is trying to decide which clubs to join. her hobbies include fixing old appliances and rebuilding them to sell at flea markets. she prefers not to have children when she's older and faints at the sight of blood. she's never been thrilled about public speaking.

Answers

Answer:

Giada should join HOSA.

Explanation:

Did the test

Answer:

Giada should join the FEA

Explanation:

i took the edge unit test :)

Lesson 22 understand angle relationships in triangles answer key

Answers

The example of Lesson 22 understand angle relationships in triangles i that the measure of the angle given in the image attached is 65°; supplementary angles add up to 180°.

What are the angle relationships in triangles?

There is the Interior angles which is known to have its both on the inside to be of  parallel lines and as such,  they are supplementary.

An example of Angle Pair Relationship are:

Complementary AnglesSupplementary AnglesAdjacent Angles

The answer is 65° and it is a supplementary angles that can add up to 180°. Note that Two angles are called supplementary when their given measures when added together is up to 180 degrees.

See full question below

What is the measure of ∠DEF? How do you know?

answer choices

65°; supplementary angles add up to 180°

65°; complementary angles add up to 180°

45°; alternate interior angles add up to 90°

135°; supplementary angles add up to 180°

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In what industry do fertilizers and pesticides wash off and contaminate water supplies?

Answers

agriculture is answer

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