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# Sampling Distribution: Proportion

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People end up tossing 12% of what they buy at the grocery store. Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior.

a. What is the probability that your survey will provide a sample proportion between 0.09 and 0.15?
b. What is the probability that your survey will provide a sample proportion between 0.105 and 0.135?
c. What is the probability that your survey will provide a sample proportion less than 0.10?

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#### 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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