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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. Reject the Null Hypothesis. 1.49 > -1.96 b. None among the choices O c. Fail to reject the Null Hypothesis. -1.96 < 1.49 < 1.96 O d. Fail to reject the Null Hypothesis. -1.65 < 1.49 < 1.65

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. Reject the Null Hypothesis. 1.49 > -1.96 b. None among the choices O c. Fail to reject the Null Hypothesis. -1.96 < 1.49 < 1.96 O d. Fail to reject the Null Hypothesis. -1.65 < 1.49 < 1.65

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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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. Reject the Null Hypothesis. 1.49 > -1.96 b. None among the choices O c. Fail to reject the Null Hypothesis. -1.96 < 1.49 < 1.96 O d. Fail to reject the Null Hypothesis. -1.65 < 1.49 < 1.65
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. Reject the Null Hypothesis. 1.49 > -1.96 b. None among the choices O c. Fail to reject the Null Hypothesis. -1.96 < 1.49 < 1.96 O d. Fail to reject the Null Hypothesis. -1.65 < 1.49 < 1.65
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