A researcher claims that the average lifetime of an Extendabulb light bulb is longer than 1030 hours. He collects data o

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A researcher claims that the average lifetime of an Extendabulb light bulb is longer than 1030 hours. He collects data o

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A Researcher Claims That The Average Lifetime Of An Extendabulb Light Bulb Is Longer Than 1030 Hours He Collects Data O 1
A Researcher Claims That The Average Lifetime Of An Extendabulb Light Bulb Is Longer Than 1030 Hours He Collects Data O 1 (42.71 KiB) Viewed 33 times
A researcher claims that the average lifetime of an Extendabulb light bulb is longer than 1030 hours. He collects data on 40 light bulbs and finds that the mean lifetime is 1061.6 hours. If the population standard deviation is known to be 90 hours, compute the standardized test statistic.
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