To compare customer satisfaction levels of two competing cable television companies, 174 customers of Company 1 and 355 customers of Company 2 were randomly selected and were asked to rate their cable companies on a five-point scale, with 1 being least satisfied and 5 being most satisfied. The survey results are summarized in the following table. Company 1 Company 2 ni = 174 = 3.51 355 š2 = 3.24 %3D 0.51 $2 = 0.52 It is desired to test, at a 0.01 level of significance, whether the data provide sufficient evidence to conclude that Company 1 has a higher mean satisfaction rating than does Company 2. Let H1 and u2 denote the population mean satisfaction ratings for Company 1 and Company 2, respectively.

To compare customer satisfaction levels of two competing cable television companies, 174 customers of Company 1 and 355 customers of Company 2 were randomly selected and were asked to rate their cable companies on a five-point scale, with 1 being least satisfied and 5 being most satisfied. The survey results are summarized in the following table. Company 1 Company 2 ni = 174 = 3.51 355 š2 = 3.24 %3D 0.51 $2 = 0.52 It is desired to test, at a 0.01 level of significance, whether the data provide sufficient evidence to conclude that Company 1 has a higher mean satisfaction rating than does Company 2. Let H1 and u2 denote the population mean satisfaction ratings for Company 1 and Company 2, respectively.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section: Chapter Questions

Problem 13PT

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