1. The data set represents the amounts of time (in minutes) spent watching
online videos each day for a random sample of 30 college students.
Assume the population standard deviation is 2.4 minutes. (Adapted from
the Council for Research Excellence)
5.0 6.25 8.0 5.5 4.75 4.5 7.2 6.6 5.8
4.2 5.4 6.75 9.8 8.2 6.4 7.8 6.5 5.5
3.8 6.75 9.25 10.0 9.6 7.2 6.4 6.8 9.8 10.2
(a) Find the point estimate of the population mean.
(b) Find the margin of error for a 95% confidence level.
(c) Construct a 95% confidence interval for the population mean.
Interpret the results.
5.5
6.0

Answers

Answer 1

Never gonna give you up, never gonna let you down, never gonna run around and dessert you.


Related Questions

Mr. Stevenson owns a bookstore. At the beginning of January, he had 528,741 books in his store. He sold 3,582 books that month and gave away 863 books

Answers

Answer:

Then he should have 524,296 books left

How to do this question

Answers

Answer:

Check your mathematics Text book...Then you can see heading True conditional statement..Check the example question then i am sure you will get the correct answer...

1111111x2000 pls help

Answers

Ans: 2,222,222,000

Why: Calculator

Please help solve this SAT math problem

Answers

Answer:

3x^2-12x-63, 7x^2-28x-147

Step-by-step explanation:

I think this problem has two answers.

3(x+3)(x-7), 7(x+3)(x-7)

the dogeball team has 10 boys and 20 girls. what percent of the team are boys

Answers

Answer:

33.3 % of the dodgeball team consist of boys.

Step-by-step explanation:

Hope that helps!

HELP ASAP PLEASE……

you ride your bike at an average of 12 miles per hour on the way to school, and at an average of 15 miles per hour on the way home. The total ride time is 22 minutes. How far away is school? Round your answer to the nearest hundredth of a mile

Answers

Answer: 2.44 miles.

Step-by-step explanation:Answer:

2.44 miles

Step-by-step explanation:

Give the following :

Average miles to school = 12 miles per hour

Average Miles from school = 15 miles per hour

Total ride time : ( time to school + time from school) = 22 minutes = (22/60) = 0.3667

Recall:

Speed = distance / Time

Time = distance / speed

Let distance = d

For the scenario described :

d/12 + d/15 = 0.3667

(5d + 4d) / 60 = 0.3667

5d + 4d = 22

9d = 22

d = 22/9

d = 2.44 miles

Hey, If your reading this I really need help i’m confused about this topic in math, and if someone could please answer it I would be so grateful.

Answers

Answer: its A

Step-by-step explanation:

The value of p² when p= -5 is 25 , please I need help for this question

Answers

Answer:

True

Step-by-step explanation:

Because -5 x -5 = -25

Which of the following is the equation of a line in slope-intercept form for a
line with slope = 1/4 and y-intercept at (0, -1)?

O A. y = 1/4 x -1/4
O B. y= 4x - 1
O C. y= 1/4x+1
O D. y = 1/4x-1

Answers

Answer:D

Step-by-step explanation: answer D. 1/4x-1

slope = 1/4 so the coefficent (number attatched to x) is going to be 1/4

y=-1 when x=0

A. =-1/4

B= -1 but the coefficent is not 1/4

C=1

D=-1

D is the correct answer

NEED HELP ASAP!!!
due by 3

Answers

Answer:

185

Step-by-step explanation:

Total area is 27 x 10= 270

unshaded are is 17x5= 85

270 - 85 = 185 (total shade area)

The answer to the question is 185

rate of change is the same as will mark brainiest ​

Answers

Answer:

slope

Step-by-step explanation:

Answer:

slope

Step-by-step explanation:

use the formula: y = mx + b

where:

y = how far up the line goes

m = slope or gradient

x = how far along

b = Y-intercept

-12 + (-3) • 3 - 8 = 4​

Answers

Answer:- 29

false

Step-by-step explanation:

Please... Solve this: the bearing of a tree from a house is 295°. Find the bearing of the house from the tree.

Answers

Given parameters:

Bearing of the tree from the house  = 295°

Unknown:

Bearing of the house from the tree = ?

Solution:

This is whole circle bearing problem(wcb). There are different ways of representing directions from one place to another. In whole circle bearing, the value of the bearing varies from 0° to 360° in the clockwise direction.

To find the back bearing in this regard, simple deduct the forward bearing from 360°;

    Backward bearing  = 360° -295°

                                    = 65°

The bearing from house to the tree is 65°

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is placed. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers.


Given a regular square pyramid with RS = 6 and PX = 4, find the following measure.

QS =

Answers

Answer:

The volume of a prism is given by ...

 V = Bh

Step-by-step explanation:

Here, the base is an equilateral triangle with side length 3 in. The area of such a triangle is given by

 A = (√3)4*s²

where s is the side length.

Your triangular prism has a base area of ...

 B = (√3)/4*(3 in)² = (9/4)√3 in²

so the volume is

 V = ((9/4)√3 in²)(6 in)

 V = (27/2)√3 in³

 V ≈ 23.383 in³

:)

A function is defined by y = 2x + 1. What is the range of the function if the domain is {0, 2, 3}?

{0, 4, 6}
{0, 4, 6}

{1, 5, 7}
{1, 5, 7}

{0, 2, 3}
{0, 2, 3}

{2, 4, 5}
{2, 4, 5}

Answers

9514 1404 393

Answer:

  {1, 5, 7}

Step-by-step explanation:

For x=0, y = 2·0 +1 = 1

For x=2, y = 2·2 +1 = 5

For x=3, y = 2·3 +1 = 7

The range is the list of y-values, so is {1, 5, 7}.

∠C and ∠D are complementary.

Let m∠C=(5x)° and m∠D=(7x−6)°.

What is the value of x?

Enter your answer in the box.

x =

Answers

Complementary angles have sum 90°

[tex]\\ \rm\Rrightarrow 5x+7x-6=90[/tex]

[tex]\\ \rm\Rrightarrow 12x-6=90[/tex]

[tex]\\ \rm\Rrightarrow 12x=96[/tex]

[tex]\\ \rm\Rrightarrow x=8[/tex]

Answer:

x = 8

Step-by-step explanation:

Complementary angles are two angles with measures that sum to 90°

Given:

m∠C = (5x)° m∠D = (7x − 6)°

⇒ m∠C + m∠D = 90°

⇒ 5x + 7x - 6 = 90

⇒ 12x - 6 = 90

⇒ 12x = 96

⇒ x = 8

i need help i know i said this already but i need it 17.18 + 44.36

Answers

It’s 61.54 that’s the answer

Answer:

61.54

Step-by-step explanation:

The decimal is .36 + .18 which is .54 and 17 + 44 is 61 so 61 + .54 is 61.54

GIVING BRAINLEST
A flower shop is creating arrangements that need exactly 3 roses each. There are 23 roses available. How many arrangements can the flower shop make? Then select your reasoning. (2 answers)
Group of answer choices

7

8

the remainder is 2, so you can make another arrangement

the remainder is 2, so you do not have enough roses for another arrangement

Answers

Answer:

7

Step-by-step explanation:

the remainder is 2, so you do not have enough roses for another arrangement

A bakery sells chocolate cupcakes and mocha cupcakes. One day it sold 368 chocolate and 32 mocha. What percent of the cupcakes sold that day were chocolate?

Answers

Answer:

92%

Step-by-step explanation:

368+32=40

368*100=36800 36800/400=92

Three times the sum of twice n and 6 is the same as the product of n less 2 and four. Find n

Answers

Answer:

61

Step-by-step explanation:

-9 - (-2) as an addition problem

Answers

Answer:

-7

Step-by-step explanation:

-9 - (-2)

If there is a negative sign in front of a negative number in parenthesis, then that makes it a positive number.

-9 + 2 = -7

What is 3/7 of $56
I am not sure

Answers

Answer:

$24

Step-by-step explanation:

1. MULTIPLY: 3 x 56 = 168

2. DIVIDE: 168 / 7 = $24

I hope this helps!

Based on multiplication we have found that 3/7 of $56 is equal to $24.

We are given that the expression 3/7 of $56

To determine 3/7 of $56, we can multiply 3/7 by $56.

Multiply 3/7 by $56:

(3/7) x $56 = (3 x $56) / 7

Calculate the numerator:

3 x $56 = $168

Divide the numerator by the denominator:

$168 / 7 = $24

Therefore, 3/7 of $56 is equal to $24.

Learn more about equations here;

https://brainly.com/question/25180086

#SPJ6

Please help, WILL GIVE BRAINLEST IF U SHOW UR WORK IF U DONT SHOW WORK ILL REPORT

Answers

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

Ok so since this is an area question we should begin with writing the correct formula for it. This says it's rectangular pool so we'll be using our rectangle formula, which is...

[tex]A=lw[/tex]

Now we plug in what we know...

[tex]length=30\frac{1}{3} \\width=12\frac{1}{2}[/tex]

Now we solve...

[tex]A=lw\\A=(30\frac{1}{3})(12\frac{1}{2})\\A=379\frac{1}{6}[/tex]

So the area is.... [tex]379\frac{1}{6}[/tex] feet ²

or if you want an improper fraction....[tex]\frac{2275}{6}[/tex] feet²

or a decimal... [tex]379.1666667=379.17[/tex] feet².

5. Noah was assigned to make 64 cookies for the bake sale. He made 125% of that
number. 90% of the cookies he made were sold. How many of Noah's cookies were left
after the bake sale?

Answers

Answer:

8 cookies

Step-by-step explanation:

64*1.25 = 80 to find how much cookies noah made

if 90%(0.9) were sold, we will find 80(0.1) to find whats left, which is 8

please help me asap​

Answers

Answer: C. perpendicular to Earth and the sun

Step-by-step explanation: I studied astronomy. :)

Evaluate - x - y - z when x = - 8, y = 6 and z = -4.

Answers

Answer:

6

Step-by-step explanation:

Plug in the values of x, y, and z: -(-8) - 6 -(-4)Simplify: 8 - 6 + 48 - 6 + 4 = 6

I hope this helps!

How would you answer Q5 e step by step please

Answers

Answer:

[tex]\sqrt{6} -3\sqrt{2}[/tex]

Step-by-step explanation:

[tex]\sqrt{150} -\sqrt{96} -\sqrt{162} +\sqrt{72}[/tex]

[tex]=\sqrt{25\cdot6} -\sqrt{16\cdot6} -\sqrt{81\cdot2} +\sqrt{36\cdot2}[/tex]

[tex]=\sqrt{25}\sqrt{6} -\sqrt{16}\sqrt{6} -\sqrt{81}\sqrt{2} +\sqrt{36}\sqrt{2}[/tex]

[tex]=5\sqrt{6} -4\sqrt{6} -9\sqrt{2} +6\sqrt{2}[/tex]

[tex]=\sqrt{6} -3\sqrt{2}[/tex]

Answer:

See below.

Step-by-step explanation:

a) √2 + √50 + √98

= √2 + 5√2 + 7√2

= 13√2

c) 5√7 + 2√5 - 3√28

= 5√7 + 2√5 - 6√7

= 2√5 - √7

e) √150 - √96 - √162 + √72

= 5√6 - 4√6 - 9√2 + 6√2

= √6 - 3√2

g) 7√3 - 2√8 + √12 + 3√8

= 7√3 - 4√2 + 2√3 + 6√2

= 9√3 + 2√2

i) 3√49 + 2√288 - √144 - 2√18

= 21 + 24√2 - 12 - 6√2

= 9 + 18√2

= 9(1+ √2)

at the movies, la quinta paid for drinks and popcorn for herself and her two children. she spend twice as much on popcorn as on drinks. if her total bill came to $17.94, how much did she spend on drinks and how much did she spend on popcorn?

Answers

Answer:

Step-by-step explanation:

let the amount spent on popcorn be x and amount spent on drinks be y

If the total bill paid is  $17.94, then x+y =  $17.94

If she spend twice as much on popcorn as on drinks, then y = 2x

Substitute y = 2x into the original equation

x+y =  $17.94

x + 2x =  $17.94

3x =  $17.94

x =  $17.94/3

x = $5.98

Since y = 2x

y = 2($5.98)

y = $11.96

Therefore she spent  $5.98 on popcorn and $11.96 on drinks

I need helpp plss and thanks

Answers

Answer:

1.63

Step-by-step explanation:

-31 + 7 = -24

[tex]\sqrt{-24}[/tex]  = 4.9

4.9/3 = 1.63 (rounded down from 1.6333333)

Answer:

[tex]x = 2 \sqrt{2} i \: or \: x = - 2 \sqrt{2} i[/tex]

Step-by-step explanation:

• Add 7 to both sides.

[tex]3x {}^{2} - 7 + 7 = - 31 + 7[/tex]

Simplify

[tex]3x {}^{2} = - 24[/tex]

Divide both sides by 3

[tex] \frac{3x {}^{2} }{3} = \frac{ - 24}{3} [/tex]

Simplify

[tex]x {}^{2} = - 8[/tex]

Find the solution

[tex]x = \sqrt{ - 8} \: and \: x = - \sqrt{ - 8} [/tex]

Simplify

[tex] \sqrt{ - 8} = 2 \sqrt{2i} [/tex]

[tex] - \sqrt{ - 8} = - 2 \sqrt{2i} [/tex]

ANSWER:

[tex]x = 2 \sqrt{2} i \: and \: x = - 2 \sqrt{2} i[/tex]

A random sample of 200 shoppers at a local grocery store found that 135 of the 200 sampled
would be willing to use self-checkout kiosks if the store installed them (ộ = 0.675).
Assuming you believe the initial results to be reasonable, how many samples would be required if
you wanted to re-do the sample, construct a 95% confidence interval, and reduce the margin of
error to 3%?
Round your answer to the nearest whole number. Remember: with sample sizes we always round
up!

Answers

Using the z-distribution, as we are working with a proportion, it is found that samples of 937 should be taken.

What is a confidence interval of proportions?

A confidence interval of proportions is given by:

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which:

[tex]\pi[/tex] is the sample proportion.z is the critical value.n is the sample size.

The margin of error is given by:

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In this problem, we have that:

The estimate is of [tex]\pi = 0.675[/tex].The margin of error is of M = 0.03.95% confidence level, hence[tex]\alpha = 0.95[/tex], z is the value of Z that has a p-value of [tex]\frac{1+0.95}{2} = 0.975[/tex], so [tex]z = 1.96[/tex].

Then, we solve for n to find the minimum sample size.

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

[tex]0.03 = 1.96\sqrt{\frac{0.675(0.325)}{n}}[/tex]

[tex]0.03\sqrt{n} = 1.96\sqrt{0.675(0.325)}[/tex]

[tex]\sqrt{n} = \frac{1.96\sqrt{0.675(0.325)}}{0.03}[/tex]

[tex](\sqrt{n})^2 = \left(\frac{1.96\sqrt{0.675(0.325)}}{0.03}\right)^2[/tex]

[tex]n = 936.4[/tex]

Rounding up, it is found that samples of 937 should be taken.

More can be learned about the z-distribution at https://brainly.com/question/25890103

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