A lunch bar has an average sales amount of $8.51. The manager initiates staff training to try to get them to sell more extras (chips, drinks etc), and after this training, a sample of 54 customers had the following sample statistics: top enclose x space equals space9.21 and s = = 2.37 Assume our question of interest is: "is there significant evidence that the mean amount spent by customers has increased?" Calculate the observed value of the test statistic (correct to 2dp).

A lunch bar has an average sales amount of $8.51. The manager initiates staff training to try to get them to sell more extras (chips, drinks etc), and after this training, a sample of 54 customers had the following sample statistics: top enclose x space equals space9.21 and s = = 2.37 Assume our question of interest is: "is there significant evidence that the mean amount spent by customers has increased?" Calculate the observed value of the test statistic (correct to 2dp).

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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