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The R&D department of a paint company has developed an additive that it hopes will increase the ability of the company's stain for outdoor decks to resist water absorption. The current formulation of the stain has a mean absorption rate of 35 units. Before changing the stain, a study was designed to evaluate whether the mean absorption rate of the stain with the additive was decreased from the current rate of 35 units. The stain with the additive was applied to 50 pieces of decking material. The resulting data were summarized to ỹ = 33.6 ands =9.2. a. Is there substantial evidence ( a =0.01) that the additive reduces the mean absorption from its current value?

The R&D department of a paint company has developed an additive that it hopes will increase the ability of the company's stain for outdoor decks to resist water absorption. The current formulation of the stain has a mean absorption rate of 35 units. Before changing the stain, a study was designed to evaluate whether the mean absorption rate of the stain with the additive was decreased from the current rate of 35 units. The stain with the additive was applied to 50 pieces of decking material. The resulting data were summarized to ỹ = 33.6 ands =9.2. a. Is there substantial evidence ( a =0.01) that the additive reduces the mean absorption from its current value?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 23PPS
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The R&D department of a paint company has developed an additive that it hopes will increase the ability of the company's stain for outdoor decks to resist water absorption. The current formulation of the stain has a mean absorption rate of 35 units. Before changing the stain, a study was designed to evaluate whether the mean absorption rate of the stain with the additive was decreased from the current rate of 35 units. The stain with the additive was applied to 50 pieces of decking material. The resulting data were summarized to j = 33.6 and s = 9.2. a. Is there substantial evidence (a = 0.01) that the additive reduces the mean absorption from its current value?
Transcribed Image Text:The R&D department of a paint company has developed an additive that it hopes will increase the ability of the company's stain for outdoor decks to resist water absorption. The current formulation of the stain has a mean absorption rate of 35 units. Before changing the stain, a study was designed to evaluate whether the mean absorption rate of the stain with the additive was decreased from the current rate of 35 units. The stain with the additive was applied to 50 pieces of decking material. The resulting data were summarized to j = 33.6 and s = 9.2. a. Is there substantial evidence (a = 0.01) that the additive reduces the mean absorption from its current value?
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