3. Hoping to lure more shoppers downtown, a city builds a new parking garage in the central business district. The city plans to pay for the structure through parking fees. During a three month period (66 weekdays), daily fees averaged $126 with a standard deviation of $13. a) Estimate with 90% confidence the mean daily income this parking garage will generate. b) The consultant who advised the city on the project predicted that the revenues would be correct? Explain. average at least $130. Based on your interval, does the consultant appear to

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3. Hoping to lure more shoppers downtown, a city builds a new parking garage in the
central business district. The city plans to pay for the structure through parking fees.
During a three month period (66 weekdays), daily fees averaged $126 with a standard
deviation of $13.
a) Estimate with 90% confidence the mean daily income this parking garage will
generate.
b) The consultant who advised the city on the project predicted that the revenues
would average at least $130. Based on your interval, does the consultant appear to
be correct? Explain.
Transcribed Image Text:3. Hoping to lure more shoppers downtown, a city builds a new parking garage in the central business district. The city plans to pay for the structure through parking fees. During a three month period (66 weekdays), daily fees averaged $126 with a standard deviation of $13. a) Estimate with 90% confidence the mean daily income this parking garage will generate. b) The consultant who advised the city on the project predicted that the revenues would average at least $130. Based on your interval, does the consultant appear to be correct? Explain.
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