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buying gifts and cards on Valentine’s Day. Suppose a researcher
wants to test this hypothesis by randomly sampling nine men and 10
women with comparable demographic characteristics from various
large cities across the United States to be in a study. Each study
participant is asked to keep a log beginning one month before
Valentine’s Day and record all purchases made for Valentine’s Day
during that one-month period. The resulting data are shown below.
Use these data and a 1% level of significance to test to determine if,
on average, men actually do spend significantly more than women
on Valentine’s Day. Assume that such spending is normally
distributed in the population and that the population variances are
equal.
Men Women
107.48 125.98 143.61 45.53 90.19 56.35 125.53 80.62 70.79 46.37 83.00
44.34 129.63 75.21 154.22 68.48 93.80 85.84
126.11
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GB 513 Unit 4 Assignment
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