A. O B. tx/2 (Round to two decimal places as needed.) 2a/2 = (Round to two decimal places as needed.) O C. Neither the normal distribution nor the t distribution applies.
A. O B. tx/2 (Round to two decimal places as needed.) 2a/2 = (Round to two decimal places as needed.) O C. Neither the normal distribution nor the t distribution applies.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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![Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value \( t_{\alpha/2} \), (b) find the critical value \( z_{\alpha/2} \), or (c) state that neither the normal distribution nor the t distribution applies.
The confidence level is 90%, \( \sigma \) is not known, and the histogram of 58 player salaries (in thousands of dollars) of football players on a team is as shown.
**Histogram Explanation:**
- The x-axis represents player salaries in thousands of dollars, ranging from 0 to 20000.
- The y-axis represents frequency.
- The histogram bars are skewed to the right, with the majority of salaries clustered between 0 and 4000 thousand dollars.
- Frequency decreases significantly for salaries above 4000 thousand dollars.
**Options:**
- A. \( t_{\alpha/2} = \) [ ]
(Round to two decimal places as needed.)
- B. \( z_{\alpha/2} = \) [ ]
(Round to two decimal places as needed.)
- C. Neither the normal distribution nor the t distribution applies.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd1a84e4f-15fd-454d-ae7f-e3c4cf2939e6%2Fbfb325dd-b60f-4ea5-ba55-c389aa701180%2F0hues3a_processed.png&w=3840&q=75)
Transcribed Image Text:Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value \( t_{\alpha/2} \), (b) find the critical value \( z_{\alpha/2} \), or (c) state that neither the normal distribution nor the t distribution applies.
The confidence level is 90%, \( \sigma \) is not known, and the histogram of 58 player salaries (in thousands of dollars) of football players on a team is as shown.
**Histogram Explanation:**
- The x-axis represents player salaries in thousands of dollars, ranging from 0 to 20000.
- The y-axis represents frequency.
- The histogram bars are skewed to the right, with the majority of salaries clustered between 0 and 4000 thousand dollars.
- Frequency decreases significantly for salaries above 4000 thousand dollars.
**Options:**
- A. \( t_{\alpha/2} = \) [ ]
(Round to two decimal places as needed.)
- B. \( z_{\alpha/2} = \) [ ]
(Round to two decimal places as needed.)
- C. Neither the normal distribution nor the t distribution applies.
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