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Normal Probability

The Navy produces a product called KM-2s that are baked in an over. The mean baking time is a normally distributed random variable, with a mean of 64 minutes and a standard deviation of 5 minutes.

a. What is the probability that a sample of 100 KM-2s will have a mean baking time greater than 64 minutes, 45 seconds?
b. What proportion of individual KM-2s bake in 57 minutes or less?

Solution Summary

The solution provides step by step method for the calculation of probability using the Z score. Formula for the calculation and Interpretations of the results are also included.