An engineer in charge of a production process that produces a stain for outdoor decks has designed a study to test the research hypotheses that an additive to the stain will produce an increase in the ability of the stain to resist water absorption. The mean absorption rate of the stain without the additive is 40 units. The engineer places that stain with the additive on n=50 pieces of decking material and records y- = 36.5 and s = 13.1. Let u denote the mean absorption rate of the stain. You must state the null and the alternative hypotheses.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 93E
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An engineer in charge of a production process that produces a stain for outdoor decks has designed a study to test the research hypotheses that an additive to the stain will produce an increase in the ability of the stain to resist water absorption. The mean absorption rate of the stain without the additive is 40 units. The engineer places that stain with the additive on n=50 pieces of decking material and records y- = 36.5 and s = 13.1. Let u denote the mean absorption rate of the stain. You must state the null and the alternative hypotheses.

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