According to statistics, the distribution of ages for licensed drivers has a mean of 44.5 years...

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According to statistics, the distribution of ages for licenseddrivers has a mean of 44.5 years and a standard deviation of 17.1years. Assume the distribution of ages is normally distributed.(Give your answers correct to one decimal place.)
(a) What percentage of the drivers are between the ages of 17and 22.
_____%

(b) What percentage of the drivers are younger than 25 years ofage.
_%

(c) What percentage of the drivers are older than 21 years ofage.
%

(d) What percentage of the drivers are between the ages of 45 and65.
_%

(e) What percentage of the drivers are older than 75 years ofage.
_____%

Answer & Explanation Solved by verified expert

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Here we have given thatX the age of licensed drivers population mean 445 years population standard deviation171 YearsA Now we want to find the percentage of the drivers are betweenthe ages 17 and 22ie For that 1st we want to find the ZscoreFor X 17Zscore 161and For X 22Zscore 132ie we get 0093400537 using z See Answer

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