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One of the questions in the Pew Internet & American Life Project asked adults if they used the Internet at least occasionally
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solution:-

a. a point estimate of a proportion of adults aged 18 to 29 who use the internet

p = x/n = 454/478 = 0.9498


b. a point estimate of a proportion of adults aged 30 to 49 who use the internet

p = x/n = 741/833 = 0.8896


c. a point estimate of a proportion of adults aged 50 and who use the internet

p = x/n = 1058/1644 = 0.6436


d. younger adults are more likely to use the internet


e. the population proportion for all adults (18 years of age and over)

=> (454+741+1058)/(478+833+1644)

=> 0.7624

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