Asked Nov 15, 2019

The average price of a college math textbook is $174 and the standard deviation is $23. Suppose that 44 textbooks are randomly chosen. Round all answers to 4 decimal places where possible.

For part b), is the assumption that the distribution is normal necessary? YesNo


Expert Answer

Step 1


The conditions for the z-distribution is appropriate as given below:

  • If the sample size is larger (n>30) or the distribution foll...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in



Hypothesis Testing

Related Statistics Q&A

Find answers to questions asked by student like you

Show more Q&A add

Q: #1Consider the following time series data.Week              1         2           3          4      ...

A: a) Forecast for week 7 can be calculated as:


Q: A CBS News poll involved a nationwide random sample of 651 adults, asked those adults about their pa...

A:  (a)The value of P(affiliated with neither party) is,


Q: Could you do Problem 6, questions a, b, and c?

A: Note:Hey there! Thank you for the question. We have found the probabilities under the standard norma...


Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A ...

A: The age bracket table is shown below:


Q: Suppose that the distribution of Writing SAT scores from your state this year is normally distribute...

A: Standard normal distribution:The standard normal distribution is a special case of normal distributi...


Q: A random experiment consists of throwing 4 equal coins, if X is the number of stamps:a. What is the ...

A: Note:Hi, thank you for this question. We have considered number of stamps as the number of tails (or...


Q: The number of calories consumed by customers at the Chinese buffet is normally distributed with mean...

A: It is given that the mean and standard deviation are 2,857 and 564, respectively.


Q: TI 84 steps please

A: It is given that the level of significance is 0.02.


Q: The shaded region under a Normal distribution with mean 0 and standard deviation 1 (Standard Normal ...

A: Standard normal distribution:The standard normal distribution is a special case of normal distributi...