Two suppliers manufacture a plastic gear used in a laser printer. The impact strength of these gears measured in foot-pounds is an important characteristic. A random sample of 10 gears from supplier 1 results in £, = 290 and s, = 12, and another random sample of 16 gears from the second supplier results in £2 = 321 and sz = 22. Is there evidence to support the claim that supplier 2 provides gears with higher mean impact strength? Use a = 0.05, and assume that both populations are normally distributed but the variances are not equal. O. Because -4.64 < -1.714, reject the Null Hypothesis O b. None among the choices O. Because -4.64 < -1.714, fail to reject the Null Hypothesis O d. Reject the Null Hypothesis
Two suppliers manufacture a plastic gear used in a laser printer. The impact strength of these gears measured in foot-pounds is an important characteristic. A random sample of 10 gears from supplier 1 results in £, = 290 and s, = 12, and another random sample of 16 gears from the second supplier results in £2 = 321 and sz = 22. Is there evidence to support the claim that supplier 2 provides gears with higher mean impact strength? Use a = 0.05, and assume that both populations are normally distributed but the variances are not equal. O. Because -4.64 < -1.714, reject the Null Hypothesis O b. None among the choices O. Because -4.64 < -1.714, fail to reject the Null Hypothesis O d. Reject the Null Hypothesis
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Two suppliers manufacture a plastic gear used in a laser printer. The impact strength of these
gears measured in foot-pounds is an important characteristic. A random sample of 10 gears from
supplier 1 results in x, = 290 and s, = 12, and another random sample of 16 gears from the
second supplier results in 8, = 321 and sz = 22.
Is there evidence to support the claim that supplier 2 provides gears with higher mean impact
strength? Use a = 0.05, and assume that both populations are normally distributed but the
variances are not equal.
a. Because -4.64 < -1.714, reject the Null Hypothesis
b. None among the choices
c. Because -4.64 < -1.714, fail to reject the Null Hypothesis
d. Reject the Null Hypothesis
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