A company manufactures ball bearings for precision machines. The average diameter of a certain type of ball bearing should be 6.0 mm. To che

Question

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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Aaliyah 2 weeks 2021-09-13T07:26:31+00:00 1 Answer 0

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    2021-09-13T07:28:27+00:00

    Answer:

    (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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45:7+7-4:2-5:5*4+35:2 =? ( )