(a) From a sports almanac or Web site, take a random sample of 50 NBA players and calculate the proportion who are at least 7 feet in height. (b) Make a 90 percent confidence interval for the...

(a) From a sports almanac or Web site, take a random sample of 50 NBA players and calculate the proportion who are at least 7 feet in height. (b) Make a 90 percent confidence interval for the population proportion of all NBA players who are at least 7 feet tall.