A supermarket chain just added two new stores located on opposite
sides of a city. Management is interested in determining if customers
are spending an equal time shopping in the stores. The research team
temporarily installed a clock punch in each store and asked 100
customers at each location to collect a time card and punch in when
they arrived and punch out as they left with their sacks full of
groceries. Results from the time cards are summarized in the table
below:
                                       Store 1           Store 2
Mean Shopping Time (min.)               89.3              83.5
Standard Deviation (min.)	        6.6               7.1

	Test the hypothesis that the two means are the same at signifigance =
0.05 versus the alternative hypothesis that the two means are not the
same.