According to a poll of adults, about 46% work during their summer vacation. Assume that the true proportion of all adults that work during summer vacation is p=0.46. Now consider a random sample of 400 adults. Complete parts a and b below.
a. What is the probability that between 39% and 53% of the sampled adults work during summer vacation?
The probability is. (Round to three decimal places as needed.)
b. What is the probability that over 63% of the sampled adults work during summer vacation?
The probability is (Round to three decimal places as needed.)