Standard error of the sampling distribution of the mean

Reference no: EM131062454

1. For a particular brand of TV picture tube, it is known that the mean operating life of the tubes isµ = 9000 hr with a standard deviation of 500 hr. Determine the expected value and standard error of the sampling distribution of the mean given a sample size of n = 25. Interpret the meaning of the computed values.

Reference no: EM131062454

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