# Instructions: Find Part I II, below

Excel Activity #4 — Chapter 8
Instructions: Find Part I & II, below, utilizing Excel and the Excel skills you ascertained from
STAT 1102. Print your results in a well formatted professional manner. All formulas/equations
utilized within Excel need be pasted within a Word Document, printed, and submitted with your
Excel results (i.e. if you instructed a specific cell within Excel to make a specific calculation, for
example Cell C2 is set to “=AVERAGE(range…)”, then on a Word Doc list:
Part II – NAPS Data:
Lack of sleep costs companies about \$18 billion a year in lost productivity, according to
the National Sleep Foundation. In recognition of this problem, many companies now
make quiet rooms available for employees to take “power naps” during work breaks. A
major airline enacted a new policy that encourages employees to take a nap during their
breaks. The data lists the number of complaints received from each employee during the
6 months before the nap policy and during the 6 months after the policy change. The
airline wants to know if the new napping policy reduced the mean number of customer
complaints against their employees.
1. State the null and alternative hypothesis.
2. Run the appropriate test in Excel and give your results appropriately.
3. What is the test statistic and p-value for this test?
4. State your conclusion at ∝=.05. Make sure to express this conclusion in the context
of this problem.