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12.03.2020 •
Mathematics
A random variable X follows the uniform distribution with a lower limit of 670 and an upper limit of 750.a. Calculate the mean and the standard deviation for the distribution. (Round intermediate calculation for standard deviation to 4 decimal places and final answer to 2 decimal places.)
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Ответ:
You can compute both the mean and second moment directly using the density function; in this case, it's
Then the mean (first moment) is
and the second moment is
The second moment is useful in finding the variance, which is given by
You get the standard deviation by taking the square root of the variance, and so
Ответ:
Hello