Find proportions in given question

Reference no: EM13900241

A recent newspaper article reported the results of a survey of well-educated suburban parents. The re- sponses to one question indicated that by age 2, chil- dren were watching an average of µ 5 60 minutes of television each day. Assuming that the distribution of television-watching times is normal with a standard deviation of s 5 25 minutes, find each of the following proportions.

a. What proportion of 2-year-old children watch more than 90 minutes of television each day?

b. What proportion of 2-year-old children watch less than 20 minutes a day?

Reference no: EM13900241

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