1. A simple random sample of 30 applicants will provide an estimate of the population mean SAT score, assume that population mean is 990, population standard deviation is 80, if i is an unbiased estimator of u, we have the distribution of sample mean i as shown in this graph. What is the probability that i will be between 980 and 1000? Sampling Distribution 80 =14.6 V30 of X E(x) = 990 %3D

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