7. Weekly demand at a grocery store for a brand of breakfast cereal is normally distributed with a mean of 942 boxes and a standard deviation of 35 boxes. What is the probability that the weekly demand is: a. 960 boxes or less? b. More than 1005 boxes? c. Between 900 and 950 boxes? 8. In each of the following cases, determine whether the sample size n is large enough to say that the sampling distribution of p (p hat) is a normal distribution. Your answer should be "yes" or "no." a. P=0.4; n=100 b. P=0.1; n=10