Solution-Sample mean of the lifetime will be less than 270

Sample mean of the lifetime will be less than 270 minutes

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The lifetime of a certain battery follows a normal distribution with a mean 276 minutes and standard deviation 20 minutes. We took a random sample of 100 of these batteries. What is the probability that the sample mean of the lifetime will be less than 270 minutes?

Reference no: EM132522835

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Sample mean of the lifetime will be less than 270 minutes

Reference no: EM132522835

Reference no: EM132522835

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