Heights for men are distributed according to a Normal model, with an average of 69 inches and a standard deviation of 3
inches. The tallest 30% of men will be at what height or taller? Round your answer to the nearest hundredth (two decimal
places), if necessary.
A study in Sweden looked at former elite soccer players, people who had played soccer but not at the elite level, and people of the same age who did not play soccer. Here is a two-way table that classifies these individuals by whether or not they had arthritis of the hip or knee by their mid-50s.
Suppose we choose one of these players at random. What is the probability that the player has arthritis, given that he or she was classified as an elite soccer player?
Express the confidence interval