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    Statistics-Hypotheses Testing Determination

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    Describe the type of test statistic you would use and state the Null and Alternate Hypotheses.

    a. Beef patties for McDonalds are prepared and packaged at a processing plant and shipped frozen to the individual outlets. From past experience, it is known that the weight of individual patties is normally distributed with a mean () of 4 oz and a standard deviation( ) of .5 oz.. If a random sample of 25 patties has an average weight of 4.235 oz., should management feel the patties are not meeting weight specifications?

    Type of test statistic_______________

    Hypotheses: H0 _______________________

    H1 _______________________

    b. Suppose that an automobile manufacturer designed a radically new lightweight engine and wants to recommend the grade of gasoline to use. The four grades are regular, regular leaded, premium and super premium. The test car made 30 trial runs on the test track using each of the four grades. What test would they use to base their recommendation?

    Type of test statistic_________________

    Hypotheses: H0 _______________________

    H1 _______________________

    c. A random sample of current students at United University yields the following data:
    Major Male Female
    Business 20 10
    Engineering 15 5
    Liberal Arts 30 20
    Science 30 20

    Use the data to determine if major is independent of sex.

    Type of test statistic: _________________

    Hypotheses: H0 _______________________

    H1 _______________________

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    Solution Preview

    Describe the type of test statistic you would use and state the Null and Alternate Hypotheses.

    a. Beef patties for McDonalds are prepared and packaged at a processing plant and shipped frozen to the individual outlets. From past experience, it is known that the weight of individual patties is normally distributed with a mean () of 4 oz and a standard deviation( ) ...

    Solution Summary

    This solution determines what type of test is used for the scenario and also states the null and alternative hypothesis.

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