A group of students was surveyed in a middle school class. They were asked how many hours they work on math homework each week. The results from the survey were recorded.

Number of Hours Total Number of Students
0 1
1 3
2 2
3 10
4 9
5 7
6 3

Determine the probability that a student studied for exactly 4 hours. Round to the nearest hundredth.
0.74
0.35
0.26
0.11
PLEASE HELP ASAP!!!!!

Answers

Answer 1

To determine the probability that a student studied for exactly 4 hours, we need to divide the number of students who studied for 4 hours by the total number of students surveyed.

From the given data, we can see that the total number of students surveyed is:

1 + 3 + 2 + 10 + 9 + 7 + 3 = 35

And the number of students who studied for 4 hours is:

9

Therefore, the probability that a student studied for exactly 4 hours is:

9/35 = 0.26 (rounded to the nearest hundredth)

So the correct answer is 0.26.

Related Questions

Please help i'm so confused

Answers

Answer:

2/3

Step-by-step explanation:

because 1 1/2 x 2/3 = 2 1/4

Answer:

1 1/2 = 3/2

2 1/4 = 9/4

3/2 divided by 9/4 = 3/2 multiplied by 4/9 = 2/3

EXPLANATION : when we have 2 fractions and we have to divide them , we have to reverse the fraction that we are dividing by and multiply it. sometimes we can simplify the fractions , sometimes we can't. for example , with 3/2 multiplied by 4/9 we simplified 3 and 9 and the 2 and the 4 which left us with 1/1 ( 1 ) multiplied by 2/3 , which gave us the answer 2/3 .

Hope I helped!

Can someone help me and answer this

Answers

If d represents the number of days, you can substitute 1 for d because you are trying to find how many minutes he practices per day.

The new equation would be m=60(1)

Then you just solve for m to find how many minutes and the answer is 60.

Bo practices 60 minutes per day.

Data was collected on the amount of time that a random sample of 8 students spent studying for a test and the grades they earned on the test. A scatter plot and line of fit were created for the data.

Determine the equation of the line of fit.

y = 5x + 60
y = 5x + 70
y = 10x + 60
y = 10x + 70

Answers

In slope-intercept form (y = mx + b), m represents the slope (rise/run) and b represents the y-intercept.

Let's look at the graph and pick two points, (2, 70) and (4, 80) and use slope formula, y2 - y1 / x2 - x1
80 - 70 / 4 - 2
10 / 2
5
The slope of this line is 5.

To find the y-intercept, we look where the line crosses through the y-axis or the vertical line.
The y-intercept is (0, 60) or 60

If we plug these numbers into slope-intercept form, we get y = 5x + 60

Your answer is y = 5x + 60

Please help
I need help on these two

Answers

Answer:surface area of pyramid is 118.80

And the volume of the cube is 1000

Step-by-step explanation:explain on picture

Answer:169.92 cm^2

Step-by-step explanation:

The base is 7.2 x 7.2 (This equals 51.84)

The area of one triangle is 29.52

There are 4 triangles with the same side lengths so you multiply 29.52 x 4.

This would equal 188.08.

Then you add everything together.

This equals 169.92 cm^2.

Answer:1,000 m^3

The formula for volume is hlw.

One of the side lengths of the cube is 10.

If the height, length, and width are ten, then you multiply them all together.

This would give you 1,000.

Five balls, A, B, C, D, and E, weigh 30g, 50g, 50g, 50g, and 80g each. Which ball weighs 30g?

Answers

Answer:

A weighs 30 because it is always on the higher side

Jaden made a rectangular sign that is 1.4 meters long and 1.2 meters wide to post on the wall of his store. How many square meters of wall does the sign cover? The answer is 1.68, but to solve the problem, you need to find 1.4 x 1.2(which it is 1.68). Estimate the area of wall that the sign will cover. Explain your thinking please.

Answers

To estimate the area of the wall that the sign will cover, we can use some rounding techniques to simplify the calculation.

First, we can round the dimensions of the sign to the nearest whole number to make the multiplication easier. Rounding 1.4 to 1 and 1.2 to 1, we can estimate that the sign covers approximately 1 square meter of wall.

This estimation assumes that the sign is placed directly on the wall with no gaps or overlaps. In reality, the actual area of wall covered by the sign may be slightly larger or smaller depending on the installation method and any spacing between the sign and the wall.

It's important to note that while estimation can be useful for getting a rough idea of the answer, it's not always accurate and should not be relied upon for precise calculations. In this case, using the actual dimensions of the sign to find the area of the wall covered (1.4 x 1.2 = 1.68 square meters) gives a more accurate result.

Please Help me i really need to pass this!

Answers

Answer: I must say it's (0,3)

Step-by-step explanation: The two lines meet at (0,3) so it's (0,3).

Hope it helps! :D

PLS HELP ASAP WILL MARK BRAINLIEST
Triangle ABC ~ triangle DEF. Use the image to answer the question.

Answers

Answer:

3.3/11 = DF/7.6

DF = (3.3 × 7.6)/11 = 2.28

Question 21: A box covers an area of 8 3/4 in. squared when resting on its base. The volume of the box is 74 3/8 in. cubed. Can you find the surface area of the box? Explain.

Answers

My dad had help my sister with this one. The answer is A

graph f(x)=|x+1|+3 then find the domain and range

mainly looking at how id find the coordinates!

Answers

Domain is all real numbers. Range is

Step-by-step explanation:

The function is a transformation of the parent function by moving the function up by 3 units.

So, the graph of the function is shown below.

From the graph, it is clear that the values has no limitation and hence can take any real values. Domain is the set of all possible values.

So, domain is the set of all real numbers.

Range is the set of all possible values for for the given domain.

From the graph, the minimum value of is at the point (. So, the minimum value of y is 3. The value then goes on increasing towards infinity.

Therefore, range is a real number greater than or equal to 3.

So, range is or

Use the image to determine the direction and angle of rotation.

270° clockwise rotation
270° counterclockwise rotation
90° clockwise rotation
180° clockwise rotation

Answers

90° clockwise rotation

90 degrees clockwise :)

In the US, 42% of people have type A blood, 10% have type B, 4% have type AB, and 44% have type O. People with type Band type AB blood can receive type B blood. What percentage of people can receive transfusions of type B blood?

Answers

Answer: 14%

Step-by-step explanation:

10+4=14

According to the information given, people with type B and AB blood can receive transfusions of type B blood.

So, the percentage of people who can receive transfusions of type B blood is the sum of the percentage of people with type B and AB blood, which is:

10% + 4% = 14%

Therefore, 14% of people can receive transfusions of type B blood.

A new physical therapy is being tested in an experimental setting to see if the new methods reduce the recovery time for patients who recently underwent surgery for a torn ACL, a ligament in your knee. To do this, the researchers in the study first performed intake on participants by observing their Body Mass Index (BMI) and had them take a survey to describe their diet and their exercise habits.

Then, the participants were split into three groups: the first group received no physical therapy, the second group received traditional physical therapy, and the third group received the new experimental physical therapy.

The group which receives no physical therapy would best be described as which of the following?

Explanatory Variable
Response Group
Control Group
Experimental Unit

Answers

Answer: The group which receives no physical therapy would best be described as the Control Group.

In an experimental study, the control group is a group of participants who do not receive the treatment being tested. They are used as a basis for comparison to evaluate the effectiveness of the treatment. In this case, the researchers are testing whether the new physical therapy reduces the recovery time for patients who underwent surgery for a torn ACL. The control group allows the researchers to compare the recovery time of patients who received no physical therapy to those who received either traditional or experimental physical therapy.

Step-by-step explanation:

Other Questions

5 of 225 of 22 Items12:41QuestionThe basic concept of how a simple motor works is explained by which statement? in what flight condition must an aircraft be placed in order to spin how can sonar best be used to monitor the hydrosphere q23.41 - level 3 homeworkunanswereddue apr 12th, 11:30 am which alkylating agent(s) should be used for the acetoacetic ester synthesis of methyl isobutyl ketone, a common solvent? the candle shop experienced the following events during its first year of operations: acquired cash by issuing common stock. paid a cash dividend to the stockholders. paid cash for operating expenses. borrowed cash from a bank. provided services and collected cash. purchased land with cash. determined that the market value of the land is higher than the historical cost. The teacher gives their students an unknown liquid in a beaker and asks them to determine the speed of a sound wave traveling through it. Select the statements that accurately describe the results the students should expect the span at which the cost behaviors are expected to hold true is called: multiple choice variable costing full absorption costing relevant range relevant period Nina uploaded a funny video on her website, which rapidly gains views over time. The relationship between the elapsed time, ttt, in days, since Nina uploaded the video, and the total number of views, V(t)V(t)V, left parenthesis, t, right parenthesis, is modeled by the following function:V(t)=500(1. 8)tComplete the following sentence about the daily percent change in the views of the video. Every day, \%%percent of views are the total number of views of the video Which figure of speech is used in this text?For the rare and radiant maiden whom the angels name Lenore. . . Edgar Allen Poe, "The Raven"1 assonance2 euphemism f the barometer read 765.2 mmhg when the measurement in in the figure below took place, what is the pressure of the gas in the flask in kilopascals? #4 Please help!!!!!!!!!! what is the central role of financial intermediaries in a market economy?group of answer choicesproviding safe deposit boxes for people and businessesthe creation and printing of moneybringing together savers and borrowerskeeping the price level stable Mishas neighbor does not pack his leaves into bags in the fall and get rid of them like the rest of the neighborhood. Instead, he takes the leaves, spreads them in a large section of his garden, sprays them with water, and then keeps them there all winter long. In the summer, Mishas neighbor has some of the biggest vegetables in town. What is one possible explanation for this? A. The decaying leaves help to form silt in his garden. B. The leaves help keep the soil from turning into loam. C. The leaves change the soil into saline soil which helps plants grow. D. The decaying leaves help to make the soil richer. Discuss about how improving the fund raising measures at afuture non-profit. Which action was intended to protect renters, sellers, and buyers from discrimination? A. passage of the Defense Housing and Community Facilities and Services Act B. creation of the Federal Housing Authority C. passage of the Fair Housing Act D. creation of the Department of Housing and Urban Developmentcivics How does friction interact with objects addictive substances, for which demand is inelastic, are products for which producers can pass higher costs on to consumers. clerks at mosier data systems key in thousands of insurance records each day for a variety of client firms. samples of the work of 20 clerks are gathered. ceo donna mosier carefully examines 100 records entered by each clerk and counts the number of errors. mosier wants to set control limits to include 99.73% of the random variation in the data entry process. which type of process control chart should she use? You may need to use the appropriate technology to answer this question.The success of an airline depends heavily on its ability to provide a pleasant customer experience. One dimension of customer service on which airlines compete is on-time arrival. The tables below contains a sample of data from delayed flights showing the number of minutes each delayed flight was late for two different airlines, Company A and Company B.Company A34 59 43 30 332 42 85 30 48110 50 10 26 7052 83 78 27 7027 90 38 52 76Company B45 63 42 32 67104 45 27 38 8475 46 32 50 6441 36 33 65 64(a)Formulate the hypotheses that can be used to test for a difference between the population mean minutes late for delayed flights by these two airlines. (Let 1 = population mean minutes late for delayed Company A flights and 2 = population mean minutes late for delayed Company B flights.)H0: 1 2 < 0Ha: 1 2 = 0H0: 1 2 0Ha: 1 2 > 0H0: 1 2 0Ha: 1 2 < 0H0: 1 2 0Ha: 1 2 = 0H0: 1 2 = 0Ha: 1 2 0(b)What is the sample mean number of minutes late for delayed flights for each of these two airlines?Company A minCompany B min(c)Calculate the test statistic. (Round your answer to three decimal places.)What is the p-value? (Round your answer to four decimal places.)p-value = Using a 0.05 level of significance, what is your conclusion?Do not Reject H0. There is statistical evidence that one airline does better than the other in terms of their population mean delay time.Reject H0. There is statistical evidence that one airline does better than the other in terms of their population mean delay time. Do not reject H0. There is no statistical evidence that one airline does better than the other in terms of their population mean delay time.Reject H0. There is no statistical evidence that one airline does better than the other in terms of their population mean delay time. Give 5 ways to achieve personal experience.