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assume that two independent random samples of size 100 each are taken from a population that has a variance of 36. The probability that the

assume that two independent random samples of size 100 each are taken from a population that has a variance of 36. The probability that the difference in the sample means is less than 2 is 0.9909. True or False

I am not sure how this is worked out, could you provide a detailed explanation of how it is done

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