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Hello students.
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Today we will discuss about this question.
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In this question we are given that a manufacturing process produces the ball bearings with a diameter to have a normal distribution with known standard deviation.
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Here the standard deviation is equal to 0 .4 centimeters and ball bearings with a diameter that are too small or too large are undesirable.
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In order to test the clay that mu that is equal to 0 .50 centimeters perform a two -tailed hypothesis test.
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So here we need to perform a two -tailed hypothesis test at alpha that is equals to 0 .05 or that is equal to 5 percentage level of significance.
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And assume that the random sample of 25.
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So n is equal to 25 gave a main diameter, mean diameter, that is x is equals to 0 .51 centimeters and perform the hypothesis test.
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And here we need to give our conclusion.
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So here we need to give our result of this hypothesis test.
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So here first of all, the hypothesis test that can be given as here, null hypothesis is equal to mu is not equals to 0 .50 centimeters...