The Computer Anxiety Rating Scale (CARS) measures an individual’s level of computer anxiety, on a scale from 20 (no anxiety) to 100 (highest level of anxiety). Researchers at Miami University administered CARS to 172 business students. One of the objectives of the study was to determine whether there is a difference between the level of computer anxiety experienced by female students and male students. They found the following:   Males Females Mean of X 40.26 36.85       S 13.35 9.42       n 60 42  do an independent t-test on the data At the 0.05 level of significance, is there evidence of a significant difference in the average computer anxiety experienced by males and females.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 4AGP
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The Computer Anxiety Rating Scale (CARS) measures an individual’s level of computer anxiety, on a scale from 20 (no anxiety) to 100 (highest level of anxiety). Researchers at Miami University administered CARS to 172 business students. One of the objectives of the study was to determine whether there is a difference between the level of computer anxiety experienced by female students and male students. They found the following:

 

Males

Females

Mean of X

40.26

36.85

      S

13.35

9.42

      n

60

42

 do an independent t-test on the data

At the 0.05 level of significance, is there evidence of a significant difference in the average computer anxiety experienced by males and females.

Expert Solution
Step 1

Suppose μ1, μ2 are the population average computer anxiety experienced by males and females, respectively.

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How does the answer to this question differ from the method used to find the difference of variability for the same data?

(At the 0.05 level of significance, is there evidence of a difference in the variability of the computer anxiety experienced by males and females?)

vs.

(is there evidence of a significant difference in the average computer anxiety experienced by males and females.)

Are both of these questions answered the same way, using the same formulas and method?

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