Accroding to the Pew Internet & American Life Project, 75% of American adults use theInternet (Pew Internet website, April 19, 2008). The Pew project authors also reported onthe percentage of Americans who use the Internet by age group. The data in the file AgeGroupare consistent with their findings. These data were obtained from a sample of 100 Internetusers in the 3049 age group and 200 Internet users in the 5064 age group. AYes indicatesthe survey repondent had used the Internet; a No indicates the survey repondent had not.a. Formulate hypotheses that could be used to determine whether the percentage of Internetusers in the two age groups differs from the overall average of 75%b. Estimate the proportion of Internet users in the 3049 age group. Does this proportiondiffer significantly from the overall proportion of .75? Use a .05c. Estimate the proportion of Internet users in the 5064 age group. Does this proportiondiffer significantly from the overall proportion of .75? Use a .05d. Would you expect the proportion of users in the 1829 age group to be larger or smallerthan the proportion for the 3049 age group? Support you conclusion with the resultsobtained in parts (b) and (c)
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