Answered: Many supermarket chains and large…

Name: Many supermarket chains and large retailers such as Tesco, Sainsbury’s
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Description: Many supermarket chains and large retailers such as Tesco, Sainsbury’s and B&Q have installed self- checkout systems so shoppers can scan their own items and cash out themselves. How do customers like this service and how often do they use it? Listed

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 21PPS

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Many supermarket chains and large retailers such as Tesco, Sainsbury’s and B&Q have installed self- checkout systems so shoppers can scan their own items and cash out themselves. How do customers like this service and how often do they use it? Listed below is the number of customers using the service for a sample of 15 days at the Sainsbury’s branch in Whitechapel:

120 108 120 114 118 91 118 92 104 104 112 97 118 108 117

Is it reasonable to conclude that the mean number of customers using the self-checkout system is more than 100 per day? Use the 0.05 significance level.

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