H ADM 201: Homework IX
Due 2:00 pm Friday, April 28 2006
Name:_____________________________________________
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H ADM 201, Section 1. (Mondays 4:40 PM: Michelle Tong)
H ADM 201, Section 2. (Mondays 7:40 PM: Michelle Tong)
H ADM 201, Section 3. (Tuesdays 4:40 PM: Melanie Pope)
H ADM 201, Section 4. (Tuesdays 7:40 PM: Melanie Pope)
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View Full DocumentH ADM 201
Homework IX
Spring 2006
Question 1.
Midway through the oftdelayed construction of the new Starbucks in Ithaca, corporate
headquarters in Seattle changed the design of new stores in order to eliminate bottlenecks
in the ordering process. They claim that the new design is especially efficient during peak
periods, and therefore, as more orders are made, more total time is saved. In order to
convince the store owner that it is worth further delaying the project and the additional
costs, they send a data file showing the total amount of orders placed during any 4 hours
during peakperiods and the change in the average amount of time it took to process those
orders from a store with the older design. Data appears in Hwk9Q1DatSp06.
Unless otherwise stated, use
α
= 0.05 or 95% confidence level, where applicable.
A. Does the new system
save time
over the older system as the number of orders
increases (state the hypotheses, compute the test statistic and corresponding p
value, and state conclusions)?
B. What is the likelihood that the new system
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 Spring '06
 RLLOYD
 Statistics, Statistical hypothesis testing, order processing time, mean order processing, nightly revenue

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