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Two different types of injection-molding machines are used to form plastic parts. A part is considered defective if has excessive shrinkage or is discolored. Two random samples, each of size 300, are selected, and 15 defective parts are found in the sample from machine 1, and 8 defective parts are found in the sample from machine 2. Is it reasonable to conclude that both machines produce the same fraction of defective parts, using a = 0.10. O a. Fail to reject the Null Hypothesis. -1.96 < 1.49 < 1.96 b. Reject the Null Hypothesis. 1.49> -1.96 O c. Fail to reject the Null Hypothesis. -1.65 < 1.49 < 1.65 O d. None among the choices

Two different types of injection-molding machines are used to form plastic parts. A part is considered defective if has excessive shrinkage or is discolored. Two random samples, each of size 300, are selected, and 15 defective parts are found in the sample from machine 1, and 8 defective parts are found in the sample from machine 2. Is it reasonable to conclude that both machines produce the same fraction of defective parts, using a = 0.10. O a. Fail to reject the Null Hypothesis. -1.96 < 1.49 < 1.96 b. Reject the Null Hypothesis. 1.49> -1.96 O c. Fail to reject the Null Hypothesis. -1.65 < 1.49 < 1.65 O d. None among the choices

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 32E
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Two different types of injection-molding machines are used to form plastic parts. A part is considered defective if has excessive shrinkage or is discolored. Two random samples, each of size 300, are selected, and 15 defective parts are found in the sample from machine 1, and 8 defective parts are found in the sample from machine 2. Is it reasonable to conclude that both machines produce the same fraction of defective parts, using a = 0.10. a. Fail to reject the Null Hypothesis. -1.96 < 1.49 < 1.96 b. Reject the Null Hypothesis. 1.49 > -1.96 c. Fail to reject the Null Hypothesis. -1.65 < 1.49 < 1.65 O d. None among the choices
Transcribed Image Text:Two different types of injection-molding machines are used to form plastic parts. A part is considered defective if has excessive shrinkage or is discolored. Two random samples, each of size 300, are selected, and 15 defective parts are found in the sample from machine 1, and 8 defective parts are found in the sample from machine 2. Is it reasonable to conclude that both machines produce the same fraction of defective parts, using a = 0.10. a. Fail to reject the Null Hypothesis. -1.96 < 1.49 < 1.96 b. Reject the Null Hypothesis. 1.49 > -1.96 c. Fail to reject the Null Hypothesis. -1.65 < 1.49 < 1.65 O d. None among the choices
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