You measure 22 watermelons' weights, and find they have a mean weight of 36 ounces. Assume the population standard deviation is 6.9 ounces. Based on this, construct a 95% confidence interval for the true population mean watermelon weight. Give your answers as decimals, to two places

Answers

Answer 1

Answer:

Step-by-step explanation:

Confidence interval formula is expressed as;

CI = xbar ±(z*s/√n)

xbar is the mean = 36

z is the z score at 95% CI = 1.96

s is the standard deviation = 6.9

n is the sample size = 22

Substitute

CI = 36  ±(1.96*6.9/√22)

CI = 36  ±(1.96*6.9/4.6904)

CI = 36  ±(1.96*1.4711)

CI = 36  ± 2.8833

CI = (36 - 2.8833, 36 + 2.8833)

CI = (33.1167, 38.8833)

Hence the 95% CI for the true population mean is 33.12<x<38.88


Related Questions

Evaluate each expression for the given value of the variables. 2x + y for x= 7 and y = 11​

Answers

Answer:

25

Step-by-step explanation:

Substitute 7 into 2, and 11 into y.

2(7)+(11)

14+11

25

93^2 -83^2

SMART CALCULATED

Answers

Answer:

Step-by-step explanation:

-1760 is the answer 83 times 83 minus 93 times 93 is -1760

fellow point stealers/hustlers rise up

Answers

Answer: I will help ppl if I know the answers but besides that I look for questions like this.

Step-by-step explanation:

The mean income for people in a certain city (in thousands of dollars) is 37 with standard deviation 80 (thousands of dollars). A pollster draws a sample of 45 people to interview.
A. What is the probability that the mean income of the sample people is more than 24 (thousands of dollars)?
B. What is the probability that the sample mean income is between 41 and 45?
C) Find the 80th percentile of the sample mean.
D) Would it be unusual for the sample mean to be less than 38?
E) Do you think it would be unusual for an individual to have an income of less than 38? Explain.

Answers

Answer:

Step-by-step explanation:

The mean income for people in a certain city (in thousands of dollars) is 37 with standard deviation 80 (thousands of dollars). A pollster draws a sample of 45 people to interview.

A. What is the probability that the mean income of the sample people is more than 24 (thousands of dollars)?

B. What is the probability that the sample mean income is between 41 and 45?

C) Find the 80th percentile of the sample mean.

D) Would it be unusual for the sample mean to be less than 38?

E) Do you think it would be unusual for an individual to have an income of less than 38? Explain.

which image shows the opposite of the opposite of `2/3` on a vertical number line​

Answers

Answer:

c

Step-by-step explanation:

only one with negative 1

A line passes through the point (0,-4) and has slope-5. What is the equation of the line in slope-intercept form?​

Answers

Y= -5x -4 because you would do slope intercept form and sub the y and x in for -4 and 0

Answer:

Y=-5x-4

Step-by-step explanation:

Ray has 3 spools of wire with an equal amount of wire on each spool. He has 19 feet of wire in total. How many feet of wire does one spool have?

Answers

Answer:

ok

Step-by-step explanation:

ok

Please help i’ll give brainliest and please dont say this is east im in 6th and just learned this

Answers

Answer:

C

Step-by-step explanation:

1/3 is .3 repeating

and you need to move decimal over twice for a percentage so should be 15%

answer choices are
A B C D
if you could, please add an explanation.

Answers

Answer:

d

Step-by-step explanation:

In ΔHIJ, i = 53 cm, ∠I=120° and ∠J=30°. Find the length of j, to the nearest 10th of a centimeter.

Answers

Answer:

30.6

Step-by-step explanation:

The sine rule of trigonometry helps us to equate the side of the triangles to the angles of the triangles. The length of the side j is 30.6 cm.

What is Sine rule?

The sine rule of trigonometry helps us to equate the side of the triangles to the angles of the triangles. It is given by the formula,

[tex]\dfrac{Sin\ A}{\alpha} =\dfrac{Sin\ A}{\beta} =\dfrac{Sin\ A}{\gamma}[/tex]

where Sin A is the angle and α is the length of the side of the triangle opposite to angle A,

Sin B is the angle and β is the length of the side of the triangle opposite to angle B,

Sin C is the angle and γ is the length of the side of the triangle opposite to angle C.

Given the length of i is 53 cm, while the measure of the ∠I is 120°. Also, the measure of ∠J is 30°. Therefore, the length of the side j is,

[tex]\dfrac{Sin\ A}{\alpha} =\dfrac{Sin\ A}{\beta} =\dfrac{Sin\ A}{\gamma}\\\\\dfrac{Sin\ I}{i} =\dfrac{Sin\ J}{j} \\\\\dfrac{Sin\ 120^o}{53} =\dfrac{Sin\ 30^o}{j} \\\\j = \dfrac{Sin\ 30^o \times 53}{Sin\ 120^o}\\\\j = 30.5995 \approx 30.6\rm\ cm[/tex]

Hence, the length of the side j is 30.6 cm.

Learn more about Sine Rule:

https://brainly.com/question/17289163

#SPJ2

A right triangle has side 9 and hypotenuse 15. Use the Pythagorean Theorem to find the length of the third side.
Provide your answer below:

Answers

Answer:

12

Step-by-step explanation:

Pythogorean Theorem:

a squared + b squared = c squared

9 squared or 81 + ? squared = 15 squared or 225

Inverse Pythagorean Theorem:

c squared - a squared = b squared

225 - 81 = 144

sqrt (144) = 12

12 = b

Hope this helps! Good luck!

Solve the inequalities


Answers

Answer:

x=3

Step-by-step explanation:

[tex]-15x+32=13\\-15x=13-32\\-15x=-45\\x=-45/-15\\x=3[/tex]

Step-by-step explanation:

To Solve This Equation You will need to

follow this;

Original Equation;

-15x+32=-13

(Firstly you will Group Like Terms)

-15x=-13-32

(After Grouping you will go ahead and simplify)

-15x=-13-32

(You will have to add the two negative numbers and note that negative plus negative is still negative even though there is no addition sign there but you'll add them because when there is two negatives without a multiplication or division or any other sign you have to add)

-15x=-13-32

-15x=-45

(Then you proceed to divide both sides by -15)

x=3

This is because -45 divided by -15 is positive 3

Positive 3 because the negative signs cancel each other out.

-6n + 3= 45
how do you solve this

Answers

Answer:

n= -7

Step-by-step explanation:

subtract 3 from both sides,-6n=42,divide both sides by -6

Answer:

[tex]\boxed{n = - 7}[/tex]

Step-by-step explanation:

[tex] \boxed{you \: solve \: by \: making \to n :} \\ the \: subjet \: of \: the \: equation \to \: \\ it \: means \: making \: \to \: n : to \: stand \: on \: its \: own \to \\ - 6n + 3 = 45 \\ - 6n = 45 - 3 \\ - 6 n= 42 \\ \frac{ - 6}{ - 6} n = - \frac{42}{6} \\ \boxed{n = - 7}[/tex]

Enter the product. Use expanded form to help.
5 X 64
=

Answers

Answer:

hi

Step-by-step explanation:

Step-by-step explanation:

Multiplying In Expanded form;

We are multiplying ×64 in expanded form is;

In multiplying in expanded form you multiply them separately;

60 multiplied by 5 which is going to be; 300

4multiplied by 5 is going to be; 20

Then you add the products from multiplying the separate numbers which is;

300+20

=320

The point (-4,-2) is reflected the x-axis.
What are it's new coordinates?
(4,2)
(-4-2)
(-4,2)
(4,-2) ​

Answers

Answer:

1

Step-by-step explanation:

1 pound of blueberries cost $2.75 yes or no

Answers

Answer:

no

Step-by-step explanation:

cause I don't really know

plese help
plese
plese

Answers

B 25% percent because 15/60 is 25
Answer: C
15 seats were empty, so 45 out of 60 seats were taken. 45 divided by 60 is 0.75, which is 75%

A group of friends were working on a student film. They spent $712 on costumes, which was 89% of their total budget. What was the total budget for their student film?

Answers

Answer:

800

Step-by-step explanation:

you divide 712 by .89

Nine less than six times a number -15

Answers

Answer:

9-(6×X)=15

Step-by-step explanation:

hope this helsp

Answer:

x= -7.66

Step-by-step explanation:

Let the number be x

According to the question

9(6×x )= -15

9(6x)= -15

54×9x= -15

9x= -15-54

9x =-69

x= -69/9

x = -7.66

Find an expression which represents the difference when (2 + 4y) is subtracted
from ( 8x + 3y) in simplest terms.

Answers

Answer:

Simplifying 6x * 3y * 9x2y4 Reorder the terms for easier multiplication: 6 * 3 * 9x * y * x2y4 ... When you enter an expression into the calculator, the calculator will simplify the ... For addition and subtraction, use the standard + and - symbols respectively.

Step-by-step explanation:

Which entry describes electromagnetic energy?

Answers

Answer:

energy D

Step-by-step explanation:

My dog Tucker went on a diet. He used to weigh 36 pounds. He now weighs only 24 pounds. What was the percent of decrease? (Round your answer to the nearest whole percent)​

Answers

Answer:

34%

Step-by-step explanation:

34% BRAINLIEST PLS :)

What is the area of this shape?

Answers

The area is 76- I believe

Meg places a tomato plant in her garden She adds a pepper plant 6 feet to the left of the
tomato plant. Then she adds a pumpkin plant 5 feet to the right of the tomato plant. How
many feet apart are the pepper plant and pumpkin plant? Show an absolute value
expression that can be used to find your answer.

Answers

Answer:

what is the opinions for the question

Please give me 1 Integer, 1 negative fraction, 1 positive fraction, 1 negative decimal, and 1 positive decimal between -1 and 1.

Please answer ASAP. Need the answers quickly. Whoever answers correctly will get Brainliest.

Answers

Answer:

Step-by-step explanation:

Integer=8

negative fraction= -1/2

positive fraction= 1/9

negative decimal=-0.4

positive decimal= 0.8

joseph is shopping for school supplies he can buy a box of 24 pens for $4.32 or a box of 36 pens for $5.76. which is a better buy

Answers

I would say it’s better to buy the 36 box pens. 24\4.32=5.6 on the other hand the box of 36 is 36/5.76=6.25

A rectangular garden has side lengths of 12 feet and (x+10) feet. The garden has an area of 480 square feet. Write an equation and solve for x

Answers

Answer:

Step-by-step explanation:

12+x+10=480

22+x=480

x=458

2(12)+2(x+10)=480

24+2x+20=480

44+2x=480

2x=436

x=218

Which value, when placed in the box, would result in a system of equations with infinitely many solutions? y = 2x – 5 2y – 4x =

Answers

Answer:

-10

Step-by-step explanation:

Answer:-10

Step-by-step explanation: trust

what is the sum of the first 30 multiplies of 3?
A.1200
B.1395
C.1500
D.1490

Answers

Answer:

Letter D. 1490

I hope you helped☜☆☞

What is the relationship between the continental drift hypothesis and the theory of
plate tectonics?

Answers

Answer:

Plate tectonics explains why Earth's continents are moving; the theory of continental drift did not provide an explanation. Therefore, the theory of plate tectonics is more complete. It has gained widespread acceptance among scientists.

Step-by-step explanation:

Do some research on it.

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