Q-17
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.
Soln:
(a)
Out of 478 adults in this age group, 454 answered yes so the required point estimate is:
(b)
Out of 833 adults in this age group, 741 answered yes so the required point estimate is:
(c)
Out of 1644 adults in this age group, 1058 answered yes so the required point estimate is:
(d)
As the age increases, proprotion of adults who used internet decreases.
(e)
Total number of people surveyed is: 478 +833 + 1644 = 2955