A random sample of 16 lightbulbs of one brand was selected to estimate the mean lifetime of that brand of bulbs. The sample mean was 1025 hour, with a standard deviation of 130 hours. Assuming that the lifetimes are approximately normally distributed, which of the following will give a 95% confidence interval to estimate the mean lifetime? 1025 + 2.13 (13D.) V16 O 1025 + 1.96/130 130 1025 土1.96 V16 1025 上2.13 ( 130 16 O 1025 + 2.13/130 1025 E 1.96 (V5) 130

A random sample of 16 lightbulbs of one brand was selected to estimate the mean lifetime of that brand of bulbs. The sample mean was 1025 hour, with a standard deviation of 130 hours. Assuming that the lifetimes are approximately normally distributed, which of the following will give a 95% confidence interval to estimate the mean lifetime? 1025 + 2.13 (13D.) V16 O 1025 + 1.96/130 130 1025 土1.96 V16 1025 上2.13 ( 130 16 O 1025 + 2.13/130 1025 E 1.96 (V5) 130

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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Transcribed Image Text:A random sample of 16 lightbulbs of one brand was selected to estimate the mean lifetime of that brand of bulbs. The sample mean was 1025 hour, with a standard deviation of 130 hours. Assuming that the lifetimes are approximately normally distributed, which of the following will give a 95% confidence interval to estimate the mean lifetime? O 1025 + 2.13 V16 (130) O 1025 + 1.96/130 130 1025 土1.96 V16 1025 -E 2.13 (/ 130 16 1025 土 2.13V130 130 1025 -E 1.96 (V15)

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