Question: If X is a random variable having a normal distribution, use the table of the standard normal distribution to determine exactly ( up to 4 decimal places) the probability of getting a value

a) within one standard deviation of the mean

b) within two standard deviations of the mean

c) within three standard deviations of the mean

d) within four standard deviations of the mean

e) Are these results consistent with the Empirical Rule? Explain