Question 11 options:

The quarterly sales of window frames follow the normal distribution with a mean of 1989 and a standard deviation of 234. The manufacturer would like to establish inventory levels such that there is only a 7% chance of running out of stock. Where should the manufacturer set the inventory levels? (Round your answer to the nearest whole number) ANSWER: The number of window frames in inventory should be set at

Question 12 (6 points)

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Question 12 options:

A Bank believes that 85% of its customers prefer the bank to close early on Friday but be open on Saturday morning. Suppose 9 customers are randomly surveyed, and that the binomial distribution applies. a) What is the probability that exactly 4 of the surveyed customers like the Saturday option? (Round your answer to 4 decimal places as needed)