Write a 90 confidence interval for the mean daily income


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.

What assumptions must you make in order to use statistics for inference?

Write a 90% confidence interval for the mean daily income this parking garage will generate.

Explain in context what this confidence interval means

Explain what 90% confidence means in this context.

The consultant who advised the city on this project predicted that parking revenues would average $130 per day. Based on your confidence level, do you think the consultant was correct? Why?

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Mathematics: Write a 90 confidence interval for the mean daily income
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