Question

One of the questions in the pew internet & american life project asked adults if they used the internet at least occasionally (pew website, october 23, 2012). the results showed that 454 out of 478 adults aged 18 - 29 answered yes; 741 out of 833 adults aged 30 – 49 answered yes; 1058 out of 1644 adults aged 50 and over answered yes. use z-table. round your answers to four decimal places.
a. develop a point estimate of the proportion of adults aged 18 – 29 who use the internet.

Answer 1

Given that 454 out of 478 adults aged 18 - 29 answered yes, the point estimate of the proportion of adults aged 18 – 29 who use the internet  is given by

$\hat{p}= \frac{454}{478} =0.9498$