# Statistics - Probability

Please help with the following problems. Provide the solution in an Excel spreadsheet.

FACTS:

The amount of time spent by North American adults watching television per day is normally distributed with a mean of 6 hours and a standard deviation of 1.5 hours.

PROBLEM:

(a) What is the probability that a randomly selected North American adult watches television for more than 7 hours per day?

(b) W11at is the probability that the average time watching television by a random sample of five North American adults is more than 7 hours?

(c) What is the probability that in a random sample of five North American adults, all watch television for more than 7 hours per day?

[PLEASE SEE THE EXCEL SPREAD SHEET ATTACHED.]

Thank you.

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#### Solution Preview

The solution file is attached.

Problem 9.19

See attached file for diagram

(a) m = 6, s = 1.5, x = 7

z = ...

#### Solution Summary

This solution aids with using excel functions to solve probability problems. A Complete, Neat and Step-by-step Solution is provided in the attached Excel file.