Approximate value of the range
If a given mesokurtic distribution has a mean of 100 and a standard deviation of 10, Find the approximate value of the range.
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Sometimes the geometric random variable is defined to be the number of trials, X, preceding the first success. Write down the corresponding pdf and derive the moment-generating function for X two ways-(1) by evaluating E (et X ) directly and (2) b
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Determine the area under the standard normal curve that lies to the left of (a) Z=-1.03, (b) Z=-1.42, (c) Z=-0.77, and (d) Z=0.66
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A cutting tool wears out with a time to failure that is normally distributed with a mean of 10 working days and a standard deviation of 2.5 days. Determine its design life for a reliability of 0.99
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