(a) In the previous problem, what was the proportion of all 48 moviegoers who were under age30? (b) For each of the samples of size n = 8 that you took, what was the proportion of moviegoers under age 30? (c) If your samples did not resemble the population, can you suggest why?

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?