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3. Two companies compete in the production of laser printers. The impact strength of a printer measured in foot-pounds is an important characteristic. A random sample of n = 10 gears from company 1 results in T = 290 and s1 = 12, and another random sample of n2 = 16 gears from the second company results in F2 = 321 and s2 = 22. (a) Is there evidence to support the claim that company 2 provides gears with higher mean impact strength? Use a = 0.05, and assume that both populations are normally distributed with potentially unequal variance. Report the p-value for the test you have performed. (b) Do the data support the claim that the mean impact strength of gears from company 2 is at least 25 foot-pounds higher than that of supplier 1?

3. Two companies compete in the production of laser printers. The impact strength of a printer measured in foot-pounds is an important characteristic. A random sample of n = 10 gears from company 1 results in T = 290 and s1 = 12, and another random sample of n2 = 16 gears from the second company results in F2 = 321 and s2 = 22. (a) Is there evidence to support the claim that company 2 provides gears with higher mean impact strength? Use a = 0.05, and assume that both populations are normally distributed with potentially unequal variance. Report the p-value for the test you have performed. (b) Do the data support the claim that the mean impact strength of gears from company 2 is at least 25 foot-pounds higher than that of supplier 1?

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
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3. Two companies compete in the production of laser printers. The impact strength of a printer measured in foot-pounds is an important characteristic. A random sample of n = 10 gears from company 1 results in T = 290 and s1 = 12, and another random sample of n2 = 16 gears from the second company results in F2 = 321 and s2 = 22. (a) Is there evidence to support the claim that company 2 provides gears with higher mean impact strength? Use a = 0.05, and assume that both populations are normally distributed with potentially unequal variance. Report the p-value for the test you have performed. (b) Do the data support the claim that the mean impact strength of gears from company 2 is at least 25 foot-pounds higher than that of supplier 1?
Transcribed Image Text:3. Two companies compete in the production of laser printers. The impact strength of a printer measured in foot-pounds is an important characteristic. A random sample of n = 10 gears from company 1 results in T = 290 and s1 = 12, and another random sample of n2 = 16 gears from the second company results in F2 = 321 and s2 = 22. (a) Is there evidence to support the claim that company 2 provides gears with higher mean impact strength? Use a = 0.05, and assume that both populations are normally distributed with potentially unequal variance. Report the p-value for the test you have performed. (b) Do the data support the claim that the mean impact strength of gears from company 2 is at least 25 foot-pounds higher than that of supplier 1?
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