Texting and teens, continued. Refer to the previous exercise. In this same survey, 59% of the teens believe that texting while driving is very/extremely distracting.
(a) Construct a 95% confidence interval for the proportion of teens who find texting while driving very distracting.
(b) In 2009, it was reported that 48% of teens found texting while driving very distracting. Test the hypothesis that there has been a rise in this proportion since 2009 using the α = 0.05 significance level.