Question

Researchers compared the response times for two groups of MBA students :

(1) Those with last names beginning with one of the first 9 letters of the alphabet and (2) those with last names beginning with one of the last 9 letters of the alphabet.

First 9 letters:

Sample size = 25

Mean response time (min) = 25.08

Standard Deviation (min) = 10.41

Last 9 letters:

Sample size = 25

Mean response time (min) = 19.38

Standard Deviation (min) = 7.12

Construct a 95% confidence interval for the difference between the true mean response times for MBA students in the two groups.

Answer #1

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