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A normal population has a mean of 30 and a standard deviation =7. For a random sample of n=6, determine the a. mean of x b. standard deviation of x The amount of sulfur in the daily emissions from a power plant has a normal distribution with a mean of 94 pounds and a standard deviation of 22 pounds. For a random sample of 5 days, find the probability that the average for those days exceeds 100 pounds. Suppose that the moisture content per pound of a dehydrated protein concentrate is normally distributed with a mean of 3.5 and a standard deviation of 0.6. A random sample of 36 specimens, each consisting of one pound of this concentrate, is to be tested. What is the probability that a. The mean will exceed 3.7 b. The mean will be between 3.34 and 3.66 A random sample size of 100 is taken from a population having a mean of 23 and a standard deviation of 4. a. What is the probability that the mean is less that 25. b. What is the probability that the mean is greater that 27. Let the number of successes X have ...

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