pany 2 = 355 3.24 = 0.52 on about these two co

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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Q3. To compare customer satisfaction levels of two competing companies, 174
customers of company 1 and 355 customers of company 2 were randomly selected
and were asked to rate the companies as a five point scale. The survey results are
summarized in the following table.
Company 1
n = 174
x= 3.51
Company 2
n2 = 355
X2 3.24
S1 = 0.51
S2 0.52
Test the hypothesis that the customer satisfaction about these two companies is
same at the level of significance 0.05.
Transcribed Image Text:Q3. To compare customer satisfaction levels of two competing companies, 174 customers of company 1 and 355 customers of company 2 were randomly selected and were asked to rate the companies as a five point scale. The survey results are summarized in the following table. Company 1 n = 174 x= 3.51 Company 2 n2 = 355 X2 3.24 S1 = 0.51 S2 0.52 Test the hypothesis that the customer satisfaction about these two companies is same at the level of significance 0.05.
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