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Let X be normally distributed random variable with?

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Question;1. Let X be normally distributed random variable with? = 100 and? = 10. Find the probability that X is between 75 and 100. (Round answer to the nearest whole number percent.)2. Let a random sample be taken of size n=36 from a population with known standard deviation of? = 3. Suppose that the mean of the sample is x? = 37. The approximate 95% confidence interval for the mean,?, of the population from which the sample was drawn. (Round the values to whole numbers for your confidence level.)

 

Paper#62029 | Written in 18-Jul-2015

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