8.35 'Tweens When it comes to advertising, "tweens" (kids aged 10 to 13) are not ready for the hardline messages that advertisers often use to reach teenagers. One study found that 78% of 'tweens under- stand and enjoy ads that are silly in nature. Unlike teenagers, 'tweens would much rather see dancing (69%) and "boyfriends and girlfriends" (63%) than "sexy looking people" or "kissing." Suppose that these results are based on a sample of size n = 1030 'tweens.

a. Construct a 95% confidence interval estimate of the proportion of 'tweens who understand and enjoy ads that are silly in nature.

b. Construct a 95% confidence interval for the proportion of 'tweens who would rather see dancing.