# Normal Probability: Average cost of renting a compact car

The average cost of a renting a compact size car in a major metropolitan area is R51.74 with a standard deviation of 7.48. Assume a normal distribution. If a sample of 20 cities is taken, what is the probability that the sample mean will fall between 47.74 and 55.74

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Explaining probability

The average cost of a renting a compact size car in a major metropolitan area is R51.74 with a standard deviation of 7.48. Assume a ...

#### 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.

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