Question
A pizza place recently hired additional drivers and as a result now claims that its average delivery time for orders is under 44 44 minutes.
A pizza place recently hired additional drivers and as a result now claims that its average delivery time for orders is under 44
44 minutes. A sample of 40 customer deliveries was examined, and the average delivery time was found to be 40.8 minutes. Historically, the standard deviation for delivery time is 10.2minutes. Using =0.01, complete parts a and b below.
a. Does this sample provide enough evidence to support the delivery time claim made by the pizza place?
Determine the null and alternative hypotheses.
Upper H 0
H0:
H1:
The z-test statistic is
The critical z-score(s) is(are)
The p-value is
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