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A computer manufacturer claimed that the mean weight of their laptops is 5.5 pounds. A sample of 125 of their laptops showed that they had a mean weight of 5.1 pounds, with a sample standard deviation of 1.1 pounds. With a 5% level of significance, test this hypothesis.

A computer manufacturer claimed that the mean weight of their laptops is 5.5 pounds. A sample of 125 of their laptops showed that they had a mean weight of 5.1 pounds, with a sample standard deviation of 1.1 pounds. With a 5% level of significance, test this hypothesis.

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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A computer manufacturer claimed that the mean weight of their laptops is 5.5 pounds. A sample of 125 of their laptops showed that they had a mean weight of 5.1 pounds, with a sample standard deviation of 1.1 pounds. With a 5% level of significance, test this hypothesis. Reject the null hypothesis. There is not enough evidence to oppose the computer manufacturer's claim. O Fail to reject the null hypothesis. There is enough evidence to oppose the computer manufacturer's claim. Fail to reject the null hypothesis. There is not enough evidence to oppose the computer manufacturer's claim. Reject the null hypothesis. There is enough evidence to oppose the computer manufacturer's claim.
Transcribed Image Text:A computer manufacturer claimed that the mean weight of their laptops is 5.5 pounds. A sample of 125 of their laptops showed that they had a mean weight of 5.1 pounds, with a sample standard deviation of 1.1 pounds. With a 5% level of significance, test this hypothesis. Reject the null hypothesis. There is not enough evidence to oppose the computer manufacturer's claim. O Fail to reject the null hypothesis. There is enough evidence to oppose the computer manufacturer's claim. Fail to reject the null hypothesis. There is not enough evidence to oppose the computer manufacturer's claim. Reject the null hypothesis. There is enough evidence to oppose the computer manufacturer's claim.
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