Lightbulbs: The lifetime of lightbulbs has a mean of 1500 hours and a standard deviation of 100 hours. A sample of 50 li

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Lightbulbs: The lifetime of lightbulbs has a mean of 1500 hours and a standard deviation of 100 hours. A sample of 50 li

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Lightbulbs The Lifetime Of Lightbulbs Has A Mean Of 1500 Hours And A Standard Deviation Of 100 Hours A Sample Of 50 Li 1
Lightbulbs The Lifetime Of Lightbulbs Has A Mean Of 1500 Hours And A Standard Deviation Of 100 Hours A Sample Of 50 Li 1 (16.6 KiB) Viewed 40 times
Lightbulbs: The lifetime of lightbulbs has a mean of 1500 hours and a standard deviation of 100 hours. A sample of 50 lightbulbs is tested a. What is the probability that the sample mean lifetime is greater than 15:30 hours? round to the nearest thousandth(decimal places b. Would it be unusual for the sample mean lifetime to be greater than 1530 hours? ves/no c. What is the probability that the sample mean lifetime is less than 1520 hours! resund to the nearest thousandth (3 decimal places d Would it be unusual for the sample mean lifetime to be less than 1520 hours? yen
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