. The true proportion of accounts receivable with some kind of error is 8 percent for Moby Group. If an auditor randomly samples 100 accounts receivable, a) is it acceptable to use the normal approximation to estimate the probability that fewer than two will contain errors? Explain your reasoning. b) what is the mean and standard deviation of errors? c) assume the auditor takes a sample of 150, what is the probability that less than 5 will contain errors