Question: Parking Hoping to lure more shoppers downtown, 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 two-month period (44 weekdays), daily fees collected averaged $126, with a standard deviation of $15.

1. What assumptions must you make in order to use these statistics for inference?
2. Write a 90% confidence interval for the mean daily income this parking garage will generate.
3. Interpret this confidence interval in context.
4. Explain what " 90% confidence" means in this context.
5. The consultant who advised the city on this project predicted that parking revenues would average $130 per day. Based on

your confidence interval, do you think the consultant was correct? Why?

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