2. A social worker conducted an 8-week assertiveness training workshop. Afterward the 14 clinets took the Door Manifest Assertiveness Test, which has a national mean of 24.0. Use the following data to construct a 95% confidence interval about the population mean from which your sample was drawn. Was the workshop effective? 24 25 31 25 33 29 21 22 23 32 27 29 30

2. A social worker conducted an 8-week assertiveness training workshop. Afterward the 14 clinets took the Door Manifest Assertiveness Test, which has a national mean of 24.0. Use the following data to construct a 95% confidence interval about the population mean from which your sample was drawn. Was the workshop effective? 24 25 31 25 33 29 21 22 23 32 27 29 30

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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Question

I’m not sure how to solve number 2 to can someone help me with the steps to get my answer. It is working with confidence intervals.

Confidence Interval Homework
1. For a sample of 300 students, you find that the mean gpa is 3.35 with a standard deviation of
.21. What is your best estimate range of the actual population gpa?
2. A social worker conducted an 8-week assertiveness training workshop. Afterward the 14 clinets
took the Door Manifest Assertiveness Test, which has a national mean of 24.0. Use the following
data to construct a 95% confidence interval about the population mean from which your sample
was drawn. Was the workshop effective?
24
25
31
25
33
29
21
22
23
32
27
29
30
27
3. Airplane manufacturers use only slow-burning materials. For the plastic in coffee pots the
maximum burn rate is 4 inches per minute. An engineer randomly sampled from a case of 120

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