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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

Section10.3: Measures Of Spread

Problem 1GP

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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

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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: -0.0094 <= p1 - p2 <= 0.074 O b. Cl on the difference: -0.0074 <= p1 - p2 <= 0.054 O c. Cl on the difference: -0.0054 <= p1 - p2 <= 0.034 Od. None among the choice
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Two different types of injection-molding machines are used to form plastic parts. A part is considered defective if it 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 proportions. Provide a practical interpretation of this interval.
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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
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