Find the 2.5th and 97.5th percentiles of the sample proportions.
Draw a graph showing the sampling distribution of , with the area between the 2.5th and 97.5th percentiles shaded.
Calculate .
Suppose someone claimed that the proportion of all 18- to 29-year-olds who had a Facebook account was less than 0.82. Based on the probability you calculated in (c), do you think there is strong evidence against this claim?