Lizten A manufacturer must test that his bolts are \( 2 \mathrm{~cm} \) long when they come off the assembly line. He must recalibrate his machines if the length is significantly different than \( 2 \mathrm{~cm} \). After sampling 100 randomly selected bolts off the assembly line, he calculates the sample mean to be \( 1.9 \mathrm{~cm} \). He knows that the population standard deviation is \( 0.50 \mathrm{~cm} \). Assume a . 05 alevel of significance. Perform a hypothesis test on if the length of the screws differ significantly. What is the p-value? 0455 0582 .0001 .4271
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Null hypothesis (H0): The mean length of the bolts is 2 cm. (μ = 2) Alternative hypothesis (H1): The mean length of the bolts is not 2 cm. (μ ≠ 2) Show more…
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