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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. Construct a 95% confidence interval on the difference in the two fractions defective O a. Cl on the difference: -0.0054 <=p1 - p2 <= 0.034 O b. Cl on the difference: -0.0074 <= p1 - p2 <= 0.054 Oc. C. None among the choice O d. Cl on the difference: -0.0094 <= p1 - p2 <= 0.074

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. Construct a 95% confidence interval on the difference in the two fractions defective O a. Cl on the difference: -0.0054 <=p1 - p2 <= 0.034 O b. Cl on the difference: -0.0074 <= p1 - p2 <= 0.054 Oc. C. None among the choice O d. Cl on the difference: -0.0094 <= p1 - p2 <= 0.074

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. Construct a 95% confidence interval on the difference in the two fractions defective O a. Cl on the difference: -0.0054 <= p1 - p2 <= 0.034 O b. Cl on the difference: -0.0074 <= p1 - p2 <= 0.054 O c. None among the choice O d. Cl on the difference: -0.0094 <= p1 - p2 <= 0.074
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. Construct a 95% confidence interval on the difference in the two fractions defective O a. Cl on the difference: -0.0054 <= p1 - p2 <= 0.034 O b. Cl on the difference: -0.0074 <= p1 - p2 <= 0.054 O c. None among the choice O d. Cl on the difference: -0.0094 <= p1 - p2 <= 0.074
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