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    Practical Business Statistics

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    Practical Business Statistics 5th edition Andrew F. Siegel

    Chapter 10
    Problem 9

    Your bakery produces loaves of bread with '1 pound' written on the label. Here are weights of randomly sampled loaves from today's production:
    1.02, 0.97, 0.98, 1.10, 1.00, 1.02, 0.98, 1.03, 1.03, 1.05, 1.02, 1.06

    a. Find the 95% confidence interval for the mean weight of all loaves produced today.
    b. Find the reference value for testing the average of the actual weights against the claim on the label.
    c. Find the hypotheses, H0 and H1.
    d. Perform the hypothesis test (two-sided, level 0.05) and report the result.
    e. What error, if any might you have committed?

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    Solution Summary

    The expert examines confidence interval for mean weight for a Bakery 1 pound loaf. A complete, neat and step-by-step solution is provided in the attached file.