
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:A national grocer's magazine reports the typical shopper spends 6 minutes in line waiting to check out. A sample of 16 shoppers at the
local Farmer Jack's showed a mean of 5.1 minutes with a standard deviation of 2.8 minutes.
Is the waiting time at the local Farmer Jack's less than that reported in the national magazine? Use the 0.025 significance level.
a. What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)
Reject HO: u 2 6 and fail to reject H1: µ < 6 when the test statistic is
b. Compute the value of the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal
places.)
Value of the test statistic
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