Use the cumulative normal probability excel output above (dealing with the amoun

Question

Use the cumulative normal probability excel output above (dealing with the amount of money parents spend per child on back-to-school items) to answer the following question.

Find the probability the amount spent on a randomly selected child is less than or equal to $721.

Use the cumulative normal probability excel output above (dealing with the amount of money parents spend per child on back-to-school items) to answer the following question.

Find the probability the amount spent on a randomly selected child is less than or equal to $721.

Normal mu 722 sigma 189 xi P(X<=xi) 151 0.0013 263 0.0076 532 0.1574 721 0.4979 810 0.6793 961 0.8970 P(X<=xi) xi 0.11 490.1862 0.12 499.9275 0.24 588.5088 0.31 628.2843 0.38 664.2641 0.76 855.4912 0.89 953.8138

Explanation / Answer

using the cumulative normal probability excel output above,

we can say that the probability the amount spent on a randomly selected child is less than or equal to $721 is 0.4979

P(X<=721)=0.4979

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