Listed below are speeds (mi/ h) measured from southbound traffic on

1-280 near Cupertino, California (based on data from SigAlert). This simple random sample was obtained at 3:30 PM on a weekday. Use the sample data to construct a 95% confidence

interval estimate of the population standard deviation. Does the confidence interval describe the

standard deviation for all times during the week?

626161576154595859696067

Answers

Answer 1

Answer:

k

Step-by-step explanation:


Related Questions

The image shows the angles formed by a pair of scissors. When the scissors are closed, m∠1 = 0°. As the scissors are opened, the measures of all four angles change in relation to each other.
Describe how the measures change as m∠1 increases from 0° to 180°.

Answers

Angle 3 is a vertical angle of angle 1 and will always be identical to what angle 1 is.

Angle 2 and angle 4 are supplementary angles to angle 1 and will always be the difference between 180 and what angle 1 is.

For example if angle 1 was 45 degrees, angle 3 would also be 45 degrees and angle 2 and angle 4 would be 180-45 = 135 degrees.

Please help me ASAP with this math problem

Answers

Answer:

Root( c square -9)

Step-by-step explanation:

The answer u have is the answer for a^2

Answer:

Root (c square -9)

Step-by-step explanation:

Why did the United States attack Afghanistan in 2001?

Afghanistan had invaded Kuwait for its oil.

Osama bin Laden, aided by the Taliban, hid in Afghanistan after the 9/11 attacks.

Intelligence reports proved that Afghanistan was planning an attack on the United States.

The leaders of Afghanistan refused to allow the United States access to its military bases.

Answers

Answer:

The answer is: Osama bin Laden, aided by the Taliban, hid in Afghanistan after the 9/11.

Step-by-step explanation:

I took the test :)

Answer:

These are for the whole test. the first answer is everything but,Saddam Hussein and Iraq assisted al Qaeda in the terrorist attacks.

The second answer is all but, Members of al Qaeda believe they will be punished by God if they take the lives of non-Muslims.

and the answer to the final question is  

Osama bin Laden, aided by the Taliban, hid in Afghanistan after the 9/11 attacks.

Mark me brainiest please and this is for K12

Tom earns ​$36 a week mowing lawns. He spends 1/6 of his earnings on lunch and 1/3 of his earnings on music. He saves the rest. How many dollars does Tom​ save? Tell how you found the answer.

Answers

Answer:

$18

Step-by-step explanation:

spent = 1/6 + 1/3 = 1/2

1/2 x 36 = $18

Answer :_

18$

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if 20% of a number is 386, what will be 30% of the same number

Answers

if the 20% of a number is 386, what will be 30% of the same number

Answer will be 157

If 20% of a number is 386,  30% of the same number is 579

How to determne the number?

Let the number be x.

So,we have:

20% * x = 386

Express 20% as 0.20

0.20 * x = 386

Divide both sides by 0.20

x = 1930

30% of the number is represented as:

30% * 1930

Evaluate the product

30% * 1930 = 579

Hence, 30% of the same number is 579

Read more about percentage at:

https://brainly.com/question/11360390

Austin got a raise. Their hourly wage was increased from $18.00 to $20.50. What was the percent increase in Austin’s wage to the nearest whole percent?

- option 1) 10%
- option 2) 12%
- option 3) 14%
- option 4) 250%

Explain the steps you did to get your anwser








[ URGENT PLEASE HELP!!!!! || BRAINLEST WILL BE AWARDED AND ILL ANWSER YOUR QUESTIONS ]

Answers

Answer:

option 3)

14% approx

Step-by-step explanation:

Given data

Initial= $18.00

final =$20.50

% increase= final - initial/initia *100

% increase= 20.50-18.0/18*100

% increase=2.5/18*100

% increase=0.138*100

% increase=13.8%

Hence the increase is 13.8%

=14% approx

1) Provide the sine, cosine, and tangent of ∠F

2) Provide the sine, cosine, and tangent of ∠R

Answers

Answer:

1. cos(F) = 2. 5/13

tan (F) = 3. 12/5

sin (F) = 1. 12/13

2. Sin (R) = 1. 60/68 = 30/34 = 15/17

cos (R) = 2. 32/68 = 16/34 = 8/17

tan (R) = 3. 60/32 = 30/16 = 15/8

Step-by-step explanation:

1 picture:

sin = Opp/Hyp

cos = adj/hyp

tan = opp/adj

cos(F) = 2. 5/13

tan (F) = 3. 12/5

sin (F) = 1. 12/13

2 Picture:

Sin (R) = 1. 60/68 = 30/34 = 15/17

cos (R) = 2. 32/68 = 16/34 = 8/17

tan (R) = 3. 60/32 = 30/16 = 15/8

1. cos(F) = 2. 5/13

tan (F) = 3. 12/5

sin (F) = 1. 12/13

2. Sin (R) = 1. 60/68 = 30/34 = 15/17

cos (R) = 2. 32/68 = 16/34 = 8/17

tan (R) = 3. 60/32 = 30/16 = 15/8

Step-by-step explanation:

1 picture:

sin = Opp/Hyp

cos = adj/hyp

tan = opp/adj

cos(F) = 2. 5/13

tan (F) = 3. 12/5

sin (F) = 1. 12/13

2 Picture:

Sin (R) = 1. 60/68 = 30/34 = 15/17

cos (R) = 2. 32/68 = 16/34 = 8/17

tan (R) = 3. 60/32 = 30/16 = 15/8

HOPE THIS HELPS

Solve for X

can you show me how to do this problem.​

Answers

Answer is 4.
Right angle= 90
50+ 10(4)= 90

Answer:

Step-by-step explanation:

Sum of all angles of triangle = 180

90 + 50 +10x = 180     {Combine like terms}

  140 + 10x = 180    {Subtract 140 from both sides}

             10x = 180 - 140

             10x = 40 {Divide both sides by 10}

                x = 40/10

x = 4

Write an equation of the line, in point-slope form, that passes through the points (–7, 2) and (3, –2). Use (–7, 2) as the point (x1, y1)

Answers

Answer:

first use the equation m = y2 - y1 / x2- x1 to get the slope

m = -2 - 2 = -4

m = 3 + 7 = 10 when there is a negative for x1 it turns positive

the slope is -4/10 or -2/5

now plus the info into the point slope equation

y - y1 = m (x-x1)

this is in point slope form y - 2 = -2/5 (x + 7)

This is how to get it in y-intercept form

y -2 = -2/5x + -2.8

now add -2 on both sides to the -2.8

y = -2/5x (Slope)  + -0.8 y- intercept

Hopefully this is right becuase this is just what i learned

Step-by-step explanation:

write the following angle measures in radians 165 degrees

Answers

Look on ingenuity to find the angle measures in radius of 165°

If CosA= sqrt 3/2, what is TanA?​

Answers

Answer:

√(3)/3

Step-by-step explanation:

cos(A) = adj./hyp.

adj. = √(3) or √(3)/2

hyp. = 2 or 1

use unit circle:

hyp. = 1

adj. = √(3)/2

use pythagorean theorem c² - b² = a²

1² - (√(3)/2)² = 1 - 0.75 = 0.25

a² = 0.25

a = √(0.25)

a = 0.5

tan(A) = opp./adj.

tan(A) = 0.5/(√(3)/2)

tan(A) = 1/√(3)

rationalize

tan(A) = √(3)/3

You deposit $2500 in an account that pays 3% annual interest compounded continuously. What is the balance in your account after 4 years?

Answers

Answer:

A≈$2819

Step-by-step explanation:

In this case P=$2500, r=3%, t=4

Sureeeeeeeeeeeeeeeeeeeeeeee

Evaluate the expression when a = -3. a^2 +6a +8​

Answers

Answer: -1! :)

Explanation:
-3^2 + 6(-3) + 8
9 + (-18) + 8
-9 + 8
-1

Use the distributive property to solve the equation.
2 (x – 9) = 10

Answers

Answer:

x = 14

Step-by-step explanation:

Hi,

To begin, distribute the 2 to the x and -9.

So...

2 ( x - 9 ) = 10

2x - 18 = 10

2x = 28

x = 14

I hope this helps :)

What did the magician do when he lost his temper?

Answers

Answer:

He pulled out his hare

Step-by-step explanation:

answer the questions correctly and put them in order

HELP!!!!!!!
Exponential growth means that b is ___.

A. > 1
B. None of these
C. < 1
D. = 1

Answers

Step-by-step explanation:

b > 1 is growth. decay would be less than 1

The exponential growth the term b>1

What is exponential growth?

But sometimes things can grow (or the opposite: decay) exponentially, at least for a while.

So we have a generally useful formula:

y(t) = a × ekt

Where y(t) = value at time "t"

a = value at the start

k = rate of growth (when >0) or decay (when <0)

t = time

for example,

Example: 2 months ago you had 3 mice, you now have 18. What is the "k" value? How many mice 2 Months from now? How many mice 1 Year from now?

Start with the formula:

y(t) = a × ekt

We know a=3 mice, t=2 months, and right now y(2)=18 mice:

18 = 3 × e2k

Now some algebra to solve for k:

Divide both sides by 3: 6 = e2k

Take the natural logarithm of both sides: ln(6) = ln(e2k)

ln(ex)=x, so: ln(6) = 2k

Swap sides: 2k = ln(6)

Divide by 2: k = ln(6)/2

Notes:

The step where we used ln(ex)=x is explained at Exponents and Logarithms.

we could calculate k ≈ 0.896, but it is best to keep it as k = ln(6)/2 until we do our final calculations.

We can now put k = ln(6)/2 into our formula from before:

y(t) = 3 e(ln(6)/2)t

Now let's calculate the population in 2 more months (at t=4 months):

y(4) = 3 e(ln(6)/2)×4 = 108

And in 1 year from now (t=14 months):

y(14) = 3 e(ln(6)/2)×14 = 839,808

As, per the formula for exponential growth the factor b will tells whether there is exponential growth or decay.

so, when b>1 then it is exponential growth and b<1 shows decays.

Learn more about exponential growth here:

https://brainly.com/question/11487261

#SPJ2

Help please!
Round your answer to the nearest hundredths, if necessary.
Find the surface area of the figure.

Answers

Answer:

The answer is 20 meters squared

base area = side^2 = 2^2 = 4 m^2

base perimeter = (2 x 4) = 8 m

lateral surface = (base perimeter x slant height)/2 = (8 x 4)/2 = 16 m^2

surface area = (base area + lateral surface) = (4 + 16)= 20m^2

Answer:

20m^2

Step-by-step explanation:

base area = side^2 = 2^2 = 4 m^2

base perimeter = 2 x 4 = 8 m

lateral surface = (base perimeter x slant height)/2 = (8 x 4)/2 = 16 m^2

surface area = base area + lateral surface = 4 + 16= 20m^2

0.211 is how much greater than 1/5

Answers

Answer:

0.011

Step-by-step explanation:

1/5= 0.2

0.211-0.2=0.011

I am not sure but I think it’s 11 since 20x5 is 100

HELP ME ! A fair coin is tossed three times in succession. The sample space is​ shown, where H represents a head and T represents a tail. Find the probability of getting exactly zero tails.

Answers

Answer:

0.125

Step-by-step explanation:

For a fair coin, H and T is the same probability. To get zero tails, we need to toss a head, then a head, and again a head - each time we succeed with probability of 0.5, so succeeding 3 times happens 0.5^3 of the time = 0.125

Alternatively, look at all the options:

HHH

HHT

HTH

HTT

THH

THT

TTH

TTT

Only one option has no tails, and because the coin is fair, each option is equally probable, so the probability of HHH is 1/8 = 0.125

Name 25% in 3 different ways

Answers

Answer:

1/4 , .25 , twenty five percent.

Step-by-step explanation:

Answer: 1/4 0.25  2 out of 8

Step-by-step explanation:

How much is the tax of a basketball that is $18 at 6% tax rate

Answers

Answer:

tax =1.08

price after tax is 19.08

Step-by-step explanation:

6%=0.06

18(.06)= 1.08

18+1.08=19.08

Find the value of x. Please help :(

Answers

Answer:

x=100, hope this helped.

Find the point of intersection of the lines:
y = 4x + 1 and y = - 2x + 4

Answers

Answer:

(0.5, 3)

Step-by-step explanation:

i used desmos

I need help please !!

Answers

Answer:

21

Step-by-step explanation:

add both and make it equal to 180

9x-9=189

x=21

please help with these 2 Q

Answers

Answer:

PC = 12 , AP = 10

Step-by-step explanation:

For each median the distance from the vertex to the centroid is twice as long as the distance from the centroid to the midpoint, then

(1)

PC = 2 × PF = 2 × 6 = 12

(2)

AP = [tex]\frac{2}{3}[/tex] × AD = [tex]\frac{2}{3}[/tex] × 15 = 2 × 5 = 10

the relationship between the number of pounds (Ib) of cheese and the total cost in dollars is shown the graph. what is the unit price of cheese?


(PLEASE HELP!!1!!11!!)

Answers

Answer:D

Step-by-step explanation:

Because the rate of change is 6, and D shows us 6/1 which equals 6.

If your able to help me please do, really need to finish this

Answers

Answer:

It is growth if the number in the parenthesis is greater than 1.

It is decay if the number in the parenthesis is less than 1.

For example y = 300[tex](2)^{x}[/tex] is growth and [tex]y = 100(.5)^{x}[/tex] is decay

Step-by-step explanation:

I NEED HELP ASAP PLEASE What is the area of this trapezoid? Enter your answer in the box.

Answers

Answer:

A=153

Step-by-step explanation:

Small Base - a=10

Small Base - b=10+7+7=24

Height - h=9

[tex]A=\frac{a+b}{2} h=\frac{9(10+24)}{2}=153[/tex]

100
o
o7
9
In a sale everything is reduced by 15%.
A week later the prices are reduced by another 20%.
The shopkeeper says that all the prices have been reduced by 35%.
5
Show that the
shopkeeper is wrong. Reduce b
educe by ist
by !5​

Answers

hznxbxjzjsjxjxjjJsjcjxjjajajxx

If one person runs 8.1 miles per hour in one direction and another with a speed of 6.3 in an other direction how many hours would have gone by if they are 20.16 miles apart

Answers

Answer:

1.4 hours

Step-by-step explanation:

Runner A:

Speed = 8.1 mph

Time, = t

Runner B :

Speed = 6.3 mph

Time, = t

Distance apart = 20.16 miles

Distance = speed * time

Distance of Runner A + Distance of runner B = distance apart

8.1t + 6.3t = 20.16

14.4t = 20.16

t = 20.16 / 14.4

t = 1.4 hours

Number of hours, t = 1.4 hours

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