Facebook provides a variety of statistics on its Web site which detail growth and popularity of the site. On average, 28 percent of 18 to 34 year olds check their Facebook profiles before getting out of bed in morning. Assume this percentage follows normal distribution with a standard deviation of five percent.
a. Determine the probability that the percent of 18 to 34-year-olds who check Facebook before getting out of bed in the morning is at least 30.
b. Determine the 95th percentile, and express it in a sentence.