1. If all possible samples of size 25 are drawn from a normal population with mean equal to 30 and standard deviation equal to 7, what is the probability that a sample mean X will fall in the interval from μx -1.700x to x-0.30 ox? Assume that the sample means can be measured to any degree of accuracy. 2. If the standard deviation of the mean for the sampling distribution of random samples of size 36 from a large or infinite population is 3, how large must the sample size become if the standard deviation is to be reduced to 1.5? Round your answer up to the next largest integer.

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A: Given information: μ=36σ=3.7 Let X be the daily production of a herd of cows.

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