The R& D department of a paint company has developed an additive that it hopes will in-crease
Question:
a. Is there substantial evidence (a = .01) that the additive reduces the mean absorption from its current value?
b. What is the level of significance (p- value) of your test results?
c. What is the probability of a Type II error if the stain with the additive in fact has a mean absorption rate of 30?
d. Estimate the mean absorption using a 99% confidence interval. Is the confidence interval consistent with your conclusions from the test of hypotheses?
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Related Book For
An Introduction To Statistical Methods And Data Analysis
ISBN: 9781305465527
7th Edition
Authors: R. Lyman Ott, Micheal T. Longnecker
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