題組內容

III. (25%) Suppose that the starting salaries of female managers have a positively skewed distribution with mean of $56,000 and a standard deviation of $12,000. The starting salaries of male managers are positively skewed with a mean of $50,000 and a standard deviation of $10,000. A random sample of 50 female managers and a random sample of 40 male managers are selected.

(a) Explain what can we infer from the description that the salaries are "positively skewed"?