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Hoping to lure more shoppers downton, a city builds a new public parking garage in the central business district. The city plans to pay for the structure through parking fees. During a 2-month period (44 weekdays), daily fees collected averaged $126 , with a standard deviation of $15.
Find a 90% confidence interval for the mean daily income the parking garage will generate.
A) (122.28 , 129.72)
B) (122.20 , 129.80)
C) (123.05 , 128.95)
D) (121.57 , 130.43)
What decision would an optimist make? Why?
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