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13 September, 07:53

A company manufactures ball bearings for precision machines. The average diameter of a certain type of ball bearing should be 6.0 mm. To check that the average diameter is correct, the company formulates a statistical test. a. What is the sampling distribution of the mean score x of a sample of 50 ball bearings given the standard deviation is 0.7 mm. b. State the null and alternative hypothesis. c. Suppose that one sample data gives x

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  1. 13 September, 11:41
    0
    (a) = 210

    (b) = 0.11

    Step-by-step explanation:

    Sampling distribution of the mean = 50 * 6 * 0.7 = 210

    Now to get the null divide 0.7 by 6

    This gives 0.11
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Home » Mathematics » A company manufactures ball bearings for precision machines. The average diameter of a certain type of ball bearing should be 6.0 mm. To check that the average diameter is correct, the company formulates a statistical test. a.
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