Question: Over many years, a library has found it checks out an average of 320 books per day, with a standard deviation of 75 books per

Over many years, a library has found it checks out an average of 320 books per day, with a standard deviation of 75 books per day. Consider that the number of books checked out per day is normally distributed. Find the probability (to 4 decimal places) that:a) less than 200 books per day are checked out. b) if a sample of 30 days is selected, that this sample mean will be between 310 and 340 books per day

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