IP6.58 A random sample of 10 stock market mutual funds was taken. Suppose that rates of return on the population of all stock market mutual funds follow a normal distribution. . A. The probability is 0.10 that sample variance is greater than what percentage of the population vanance? . B. Find any pair of numbers, a and b, to complete the following sentence: The probability is 0.95 that the sample variance is between a% and b% of the population variance u 6.59 Each member of a random sample of 15 business economists was asked to predict the rate of inflation for the coming year. Assume that the predictions for the whole population of business economists follow a normal distribution with standard deviation 1.8%. . A. the probability is 0.01 that the sample standard deviation is bigger than what number? . B. The probability is 0.025 that the sample standard deviation is less than what number