Probability that difference between sample mean is more

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A random sample of size 16 is selected from a normal distribution with a mean of 92 and a standard deviation of 11.Another random sample of size 12 is selected from another normal distribution which has mean of 88 and standard deviations 16. Find the probability that the difference between the sample mean.a)is more than 8.b)is less than by 18.

Reference no: EM13125631

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