e) Find the critical value used to construct a 80% Confidence Interval for the mean. Only for this part use o = 23.8.
e) Find the critical value used to construct a 80% Confidence Interval for the mean. Only for this part use o = 23.8.
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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Transcribed Image Text:**Data Set Analysis**
Use the following data set: **40, 33, 77, 12, 23, 56, 23, 19, 29** (minutes). Assume the data is approximately bell-shaped and a sample.
**Description:**
This data set consists of nine values measured in minutes. The values represent a sample, and it is assumed that the data distribution is approximately bell-shaped, indicating a normal distribution. Users can analyze this data to calculate statistical measures such as mean, median, mode, standard deviation, and variance to understand the data's distribution and variability.

Transcribed Image Text:e) Find the critical value used to construct an 80% Confidence Interval for the mean. Only for this part use \(\sigma = 23.8\).
Expert Solution

Step 1
Solution:
e.
From the given information, the population standard deviation is σ=23.8 is known.
The confidence level is 0.80.
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