A sample of size 9 will be drawn from a normal population with mean 60 and standard deviation 13. (a) Is it appropriate to use the normal distribution to find probabilities for x? (b) If appropriate find the probability that x will be between 50 and 70. Round the answer to four decimal places. (c) If appropriate find the 80" percentile of x. Round the answer to two decimal places. O It is appropriate to use the normal distribution to find probabilities for x. The probability that x will be between 50 and 70 is The 80 percentile of x is O It is not appropriate to use the normal distribution to find probabilities for x