# Normal probability

A normal population has an average of 80 and a standard deviation of 14.0.

Calculate the probability of a value between 75.0 and 90.0.

Calculate the probability of a value of 75.0 or less.

Calculate the probability of a value between 55.0 and 70.0.

https://brainmass.com/statistics/probability/normal-probability-230412

#### Solution Summary

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

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