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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?

    © BrainMass Inc. brainmass.com June 4, 2020, 3:21 am ad1c9bdddf
    https://brainmass.com/statistics/sampling-distribution/sampling-distribution-proportion-510545

    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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