Question

7. The EverGreen Salad company asserts that on average its packaged salad greens remain fresh for 4 days after the "use by" date on the package, with a standard deviation of 0.45 days. Assume that the length of time a package of greens stays fresh after the "use by" date is normally distributed. a) What is the probability that a randomly selected package of greens will be fresh for more than 5 days after the "use by" date on the package? b) The EverGreen Company has decided to offer a refund for packages that are not fresh days after the "use by" date on the package. Find the largest value of x (a whole number of days) so that the company can expect to issue refunds for at most 1 of 250 containers. Justify your answer.

Answer 1

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