Assume that the heights of 3000 male students at a university are normally distributed with a mean of 68.0 inches and a standard deviation of 3.0 inches. If 80 samples consisting of 25 students are obtained (with replacement), what is the expected mean and standard deviation of the resulting sampling distribution of the means? Select one: a. mean 68.0, sample standard deviation = 0.6 inches b. mean 70.0, sample standard deviation = 1.0 inches c. mean 68.0, sample standard deviation 3.0 inches d. mean = 70.0, sample standard deviation = 3.0 inches e. mean 68.0, sample standard deviation 0.7 inches