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SOLVED:A normal random variable x has mean μ=5 and σ=2. Find the following probabilities of these x -values: a. 1.27.5 c. x ≤0
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SOLVED: A random variable, X, has a mean m = 12 and standard deviation sX = 7. One conducts a sampling procedure from X with a certain sample size of 49. Question: 1). what is the approximate distribution of the sample mean? 2). what is the mean of the sample mean? 3). what is the standard deviation of the sample mean?
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Let x be a random variable that is normally distributed with the given mean and standard deviation. Find the indicated probabilities using a symbolic integration utility. μ=50, σ=10 (a) P(x>55) (b) P(x>60) (c) P(x<60) (d) P(30<x<55) | Numerade
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