Week 7 Assignment: Hypothesis Testing
Week 7 Assignment: Hypothesis Testing
The suggestion for Lazer Company is to infer that the mean diameter of parts resulting
from the test run deviates from the contractual requirement, specified as 6 inches. This inference
is drawn as the null hypothesis is rejected at a significance level of 0.01, indicating a significant
difference in the observed mean diameter from the contracted 6 inches. It's crucial to recognize
that opting to reject the null hypothesis carries a risk associated with Type I errors. The 0.01
significance level signifies the likelihood of incorrectly concluding a difference without one.
This statement summarizes the outcomes of a hypothesis test, presenting adequate statistical
evidence for rejecting the null hypothesis, asserting that the mean diameter equals 6 inches.
Consequently, the recommendation is for Lazer Company to acknowledge that the mean
diameter of parts from the test run differs from the stipulated contractual requirement.
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