A university wants to investigate how much its students spend on textbooks each semester. Since all
students must purchase their materials through the campus bookstore, a random sample of 15 student
accounts is selected, and the averagą dollar amount spent on textbooks is calculated.
Which of these circumstances would make it inappropriate to use this sample to calculate a 95%
confidence interval for the mean amount spent on books by students at this university?
The standard deviation of the textbook costs is below $30.
The standard deviation of the textbook costs is larger than $100.
A stem-and-leaf plot of the textbook costs shows a roughly symmetric distribution
A histogram of the textbook costs is calculated and shows a slight skew to the right.
A boxplot of the textbook costs shows two students whose amounts would qualify as outliers,

Answers

Answer 1

Answer:

Step-by-step explanation:

Related Questions

Nathaniel is using the quadratic formula to solve 0 = x2 + 5x - 6. His steps are shown below.
What are the solutions to the attached equation?

Answers

Answer:

x = -6, 1

Step-by-step explanation:

x=[tex]\frac{-5+\sqrt{49} }{2}[/tex] or x= [tex]\frac{-5-\sqrt{49} }{2}[/tex]

x=[tex]\frac{-5+7}{2}[/tex] or x=[tex]\frac{-5-7}{2}[/tex]

x=2/2 or x=-12/2

x = 1, -6

howdy!!

yr answer is B. x = -6, 1

goodluck on edge!! ^_^

A cone has the same radius and height as a cylinder which has greater volume the cone or the cylinder

Answers

Answer:

The cylinder has the great volume

Step-by-step explanation:

The volume of a cone = (h/3)πr²

The volume of a cylinder = hπr²

The only difference is that h is divided by 3 for the volume of a cone, making the total volume of a cone smaller than the volume of a cylinder with the same radius and height.

What is the value of x in the equation −x = 6 − 3x + 8? (1 point) Question 10 options: 1) −14 2) −7 3) 14 4) 7

Answers

The answer is 4) 7

x=7

Answer:

Step-by-step explanation:

x = 7

What is the answer please help no links no links

Answers

The lateral surface area is 144 cm squared (lateral surface area means that you don’t count the base right?)
6 times 12 = 72 cm squared
72 divided by 2 = 36 cm squared
36 times 4 = 144 centimeters squared
(total surface area would be 180 cm squared)

After eating at the restaurant, Sam, Jason, and Joan decided to divide the bill evenly. If each person paid x dollars, what was the total of the bill ?

Answers

Answer:

I need numbers ??

Step-by-step explanation:

the total bill will be divided by three

Answer:

x+x+x=3x

Each paid x dollars

Answer = 3x

From the equation y = 4 - X, which ordered pair would represent a solution?
A (3,-1)
B (9,5)
C (6,-2)
D (0,-4)

Answers

I think it’s D hope that helped

Let’s rewrite the equation in y=mx+b
y=-x+4
The slope is -x or -1x. Rise 1, run 1
The y intercept is 4
Start from 4 on the y axis and move down 1 and right 1.
The line will cross point (6,-2)
Answer C

Write the number 8.7 x 10^-6 in standard form.

Answers

That's already in standard form

help me please with this

Answers

9514 1404 393

Answer:

8. CE

9. b) no

10. 22

Step-by-step explanation:

8. The smallest side is opposite the smallest angle (D=58°). The smallest side is CE.

9. The sum of the shortest sides must exceed the longest side.

1 + 2 > 5 . . . . NOT TRUE -- no triangle can be formed

10. The possible lengths of the third side range between the difference and the sum of the given sides. If that length is x, then we must have ...

15-8 < x < 15+8

7 < x < 23

The largest integer value of x is 22. The third side can be at most 22.

Amal had a birthday part at the movies. It costs $30 for pizza and $7.50 per friend for the movie tickets. How many friends can Amal have at her party if she has $100?

1) Write an equation that matches this scenario.

2) Define the variable. (What variable are you using and why?)

3) Solve the equation.

Answers

Answer:

$100 or y = 7.5x + 30

I used x as it represents the cost of each friend and can be used to solve the total number of friends possible.

She can have 9 friends at her party

Step-by-step explanation:

y = 7.5x + 30

Total Amount + Cost per Friend + Total Cost of Pizza

100 = 7.5x +30

subtract 30 from each side

70 = 7.5x

divide each side by 7.5

9.33 = x

Always round down to the nearest whole in human examples!

Evaluate the expression x + 23, when x = 17

Answers

Answer:

Step-by-step explanation:

If we have to evaluate an expression, we spsolve for whatever variable there is, and simplify. Here, we know x is 17, so we can plug it into the original expression.

17 + 23 = 40

It is reported that 56% of a state is experiencing drought conditions. An agricultural researcher randomly selects ten farmers in the state and asks if their farms are experiencing drought. What is the expected number of farmers who have experienced drought? Find the standard deviation.

Answers

Answer:

I think your answer would be 5.6

Step-by-step explanation:

56% of 10 = 5.6

Two angles in a triangle are 30 degrees and 40 degrees. Find the missing angle measure. Please show your math work step by step and don't forget the unit. 40° 30

Answers

Answer:

110

Step-by-step explanation:

Hello There!

If you didn't know the rule about angles in a triangle is that they have a sum of 180

So we can find the measure of the missing angle by subtracting the given angles (in this case 30 and 40) from 180

so the missing angle = 180 - 30 - 40

180 - 30 = 150

150 - 40 = 110

so the missing angle = 110

Label the spinner below with the letters A though J. What is the probability of landing on a vowel on the spinner and rolling a number greater that 4 on the fair number cube?

Answers

Answer:

3 for vowles and two for number

Step-by-step explanation:

I also need help on this one just need points

(2z+2)(z^2+z–2) please help

Answers

Answer:

2z^3+4z^2-2z-4

Step-by-step explanation:

Distribute

2z^3+2z^2-4z+2z^2+2z-4

Simplify

2z^3+4z^2-2z-4

w-7.1=18.4 what is w?

Answers

Answer:

25.5

Step-by-step explanation:

Add 7.1 to each side

[tex]w-7.1=18.4[/tex]

[tex]+7.1[/tex] [tex]+7.1[/tex] add 7.1 on both sides, 7.1s will cancel out on the left side.

___________ solve for 18.4 + 7.1, which is 25.5

[tex]w=25.5[/tex], final answer.

Please help me figure out this math problem

Answers

Answer:

Step-by-step explanation:

where the question ?

Question 3(Multiple Choice Worth 4 points) (05.05)The width of a rectangle is shown below: A coordinate plane with a point A at negative 3, 3 and C at negative 3, negative 2. If the area of the rectangle to be drawn is 20 square units, where should points B and D be located if they lie to the right of points A and C? B(1, 3) and D(1, −2) B(3, 3) and D(3, −2) B(2, 3) and D(2, −2) B(1, 2) and D(1, −3)

Answers

D 4/147
FTC +65-/325
Junk. 5(-4)

Answer:

(3, 3) and D(3, −2

Step-by-step explanation:

100 POINTS!!
What is the value of x? Enter your answer in the box.

Answers

the answer should be 46

kim works from 6 to 11 on friday and saturday evenings at ty’s diner. she gets $4.35 an hour plus tips. her tips were $37.35 on friday and $42.10 on saturday. how much did she earn for the 2 night’s work? _________ how much did she average per hour? ________

Answers

Answer:

Friday, total earning:

(11 - 6)*$4.35 + $37.35 = $59.10

Saturday, total earning:

(11 - 6)*$4.35 + $42.10 = $63.85

Total for the two nights is:

$59.10 + $63.85 = $122.95

Average per hour is:

$122.95/(5 + 5) = $122.95 / 10 = $12.30 (rounded)

HELP PLEASE ! 15 POINTS NO SCAM LINKS OR REPORTED.

Answers

Answer:

I think it is either C or D

Step-by-step explanation:

I'm so sorry id didn't find the answer, i tried

F(x)=0.5^x what is the domain and range

Answers

Answer:

XER (X are all real numbers)

Step-by-step explanation:

as;dbdjkdbusaj hfsvd

Please please help please

Answers

Answer:

6 times larger

Step-by-step explanation:

First, find the area of both.

Mary: 4*5.5=22

Lisa: 24*5.5=132

Then find what multiplied by 22 would equal 132. This is easy because it's a multiple-choice question.

22*20=440, so A is incorrect

We already know they are not equal, so then B can be crossed out

22*3=66, C would be incorrect

Leaving the only choice left to be the correct answer

22*6=132

A cupcake recipe calls for 3/6 cups of milk, and you have cups of milk in the 5/8 refrigerator. How many cups of milk will you have remaining after baking the cupcakes ?

Answers

Answer:

1/6 = 4/24 5/8 = 15/24

15 - 4 = 11 11/24 cups of milk left

Step-by-step explanation:

NEED HELP ASAP WILL GIVE BRAINLIEST REAL ANSWERS ONLY PLZ REPORT LINKS OR PEOPLE ANSWERING FOR POINTS

Answers

Answer:

Step-by-step explanation:

Trust

1. What is the slope of the line
given by the equation
y = 2x +7

Answers

Answer:

Step-by-step explanation:

2.
used formula y=mx+c
m is the slope.
therefore 2 is the answer

what are irrational numbers

Answers

Answer:

Step-by-step explanation:

Irrational numbers are numbers that cannot be expressed as the ratio of two whole numbers.

Step by step explanation please

Answers

Step-by-step explanation:

of what where is the question

what are we explaining ?

The sum of three times a number and six is nine

Answers

E⁣⁣⁣xplanation i⁣⁣⁣s i⁣⁣⁣n a f⁣⁣⁣ile

bit.[tex]^{}[/tex]ly/3a8Nt8n

which of the following is the quotient of the rational expression shown below? x/3x-1 ÷ x-2/2x

Answers

Step-by-step explanation:

[tex] \frac{x}{3x - 1} \div \frac{x - 2}{2x} = \\ = \frac{x}{3x - 1} \times \frac{2x}{x - 2} = \\ = \frac{2 {x}^{2} }{3 {x}^{2} - 7x + 2} [/tex]

What Is 20cm rounded to the nearest 10?

Answers

Answer:

Step-by-step explanation:

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