Find the number of viewers that represents the 75th, Ask an Expert

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Discovering Statistics: Referring to the information from my first question as stated; Nielson Media Research reported that, for the week, ending July 11, 2004, 12 million viewers watched the television show 60 minutes. Suppose that the distribution of viewers of 60 minutes is normal with mean µ = 12 million and the standard deviation σ = 4 million.

a. Find the number of viewers that represents the 75th percentile.

b. On one particular night, 24 million people watched 60 minutes. Is this unusual? On what do you base your answer?

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