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Author Question: Test whether he given claim is supported or not supported using a 0.05 significance level. Assume ... (Read 659 times)

OSWALD

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on: Jan 18, 2020
Test whether he given claim is supported or not supported using a 0.05 significance level. Assume that the sample has been randomly selected from a population with a normal distribution.

A manufacturer makes ball bearings that are supposed to have a mean weight of 30 grams. A retailer suspects that the mean weight is actually less than 30 grams. The mean weight for a random sample of 16 ball bearings is 28.5 grams with a standard deviation of 4 grams. Use a 0.05 significance level to test whether the claim that the mean is less than 30 grams is supported or not supported.
◦ supported
◦ not supported
Statistical Reasoning for Everyday Life ¦ Bennett, Briggs, Triola ¦ 5th Edition
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Marked as best answer by OSWALD on Jan 18, 2020

jessofishing

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Reply #1 on: Jan 18, 2020
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OSWALD

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Reply 2 on: Jan 18, 2020
YES! Correct, THANKS for helping me on my review

JCABRERA33

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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