The amount of money spent weekly on cleaning, maintenance, and repairs at a large restaurant was observed

Question:

The amount of money spent weekly on cleaning, maintenance, and repairs at a large restaurant was observed over a long period of time to be approximately normally distributed, with mean m = $615 and standard deviation s = $42.

(a) If $646 is budgeted for next week, what is the probability that the actual costs will exceed the budgeted amount?

(b) Inverse Normal Distribution How much should be budgeted for weekly repairs, cleaning, and maintenance so that the probability that the budgeted amount will be exceeded in a given week is only 0.10?

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...