Johann Raphael, the manager of JRDC Computer Store is conducting a study of the number of customers who pay by personal check, by a credit card and by bank card. During the course of five different days, he records the following number of purchases made by each method: Check Credit Card Bank Card 28 22 32 17 25 34 40 28 25 21 31 29 30 43 27
Johann Raphael, the manager of JRDC Computer Store is conducting a study of the number of customers who pay by personal check, by a credit card and by bank card. During the course of five different days, he records the following number of purchases made by each method: Check Credit Card Bank Card 28 22 32 17 25 34 40 28 25 21 31 29 30 43 27
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Johann Raphael, the manager of JRDC Computer Store is conducting a study of the number of customers who pay by personal check, by a credit card and by bank card. During the course of five different days, he records the following number of purchases made by each method:
Check |
Credit Card |
Bank Card |
28 22 32 17 25
|
34 40 28 25 21 |
31 29 30 43 27 |
Test if there is any difference in the mean number of purchases made with each method at the a = 0.05 level of significance.
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