need help with statistics worksheet

I have this worksheet i cannot figure out whatsoever. If anyone could help me please email me and i will email you the worksheet. It involves test statistics and conifdence intervals. My email is [deleted for security]. Thanks

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Thank you for your consideration.

Eliz.

Anyone Know?

During a two-m,onth period (44 weekdays), daily fees collected averaged $126, with a standard deviation of $15.

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