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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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![To what extent are sales people more extroverted than the general
population? To help find out, Alice collects a sample of 25 sales people
Each completes a scale of extroversion (from 1-7) with the following
national norms: µ = 3.79, o = 1.55. Alice decides to use the NHST
approach with the null hypothesis of no difference from the national
norm (H0: μ salespeople = 3.79). Given a = .05, which of the following
that would indicate a statistically significant finding.
p=.5
p = .01
z = 0 (where z is computed
via the national μ and o)
The sample mean is 5.5,
95% CI [3, 7]
The sample mean is 3.9,
95% CI [3.8, 4.0]
The sample mean is 3.81,
95% CI [3.80, 3.82]
No
O O O OC
O
Yes
O
O](https://content.bartleby.com/qna-images/question/4143f45a-5c96-4449-af2f-abda697f3e91/429a237a-dd15-4fc1-a0d8-0e04cfd070d8/z8jsgcf_thumbnail.png)
Transcribed Image Text:To what extent are sales people more extroverted than the general
population? To help find out, Alice collects a sample of 25 sales people
Each completes a scale of extroversion (from 1-7) with the following
national norms: µ = 3.79, o = 1.55. Alice decides to use the NHST
approach with the null hypothesis of no difference from the national
norm (H0: μ salespeople = 3.79). Given a = .05, which of the following
that would indicate a statistically significant finding.
p=.5
p = .01
z = 0 (where z is computed
via the national μ and o)
The sample mean is 5.5,
95% CI [3, 7]
The sample mean is 3.9,
95% CI [3.8, 4.0]
The sample mean is 3.81,
95% CI [3.80, 3.82]
No
O O O OC
O
Yes
O
O
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