A random variable is normally distributed. It has a mean of 240 and a standard deviation of 20. a.) For a sample of size 16, state the mean of the sample mean and the standard deviation ofthe sample mean. b.) For a sample of size 16, find the probability that the sample mean is less than 230. c.) For a sample of size 25, state the mean of the sample mean and the standard deviation ofthe sample mean. d.) For a sample of size 25, find the probability that the sample mean is more than 241