ne Summary statistics nce First 9 Letters: Last 9 Letters: A-I R-Z l is Sample size: Mean response time (minutes): Standard deviation (minutes): 25 25 14.57 es 20.85 8.66 7.02 Print Done
ne Summary statistics nce First 9 Letters: Last 9 Letters: A-I R-Z l is Sample size: Mean response time (minutes): Standard deviation (minutes): 25 25 14.57 es 20.85 8.66 7.02 Print Done
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:id Researchers investigated the speed with which consumers decide to purchase a product. The researchers theorized that consumers with last names that begin with
letters later in the alphabet will tend to acquire items faster than those whose last names begin with letters earlier in the alphabet-called the last name effect. MBA
students were offered tickets to a basketball game. The first letter of the last name of respondents and their response times were noted. The researchers compared
the response times for two groups: (1) those with last names beginning with a letter, A-I, and (2) those with last names beginning a letter, R-Z. Summary statistics
for the two groups are provided in the accompanying table. Complete parts a and b below.
Click the icon to view the summary statistics.
a. Construct a 95% confidence interval for the difference between the true mean response times for MBA students in the two groups.
The 95% confidence interval is ( .
(Round to two decimal places as needed.)
Transcribed Image Text:the
Summary statistics
ence
First 9 Letters: Last 9 Letters:
A-I
25
20.85
R-Z
val is
Sample size:
Mean response time
(minutes):
Standard deviation (minutes):
25
14.57
ces
8.66
7.02
Print
Done
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