RegencySlayer5304
13.03.2020 •
Mathematics
1) A chemical supply company ships a certain sol- vent in 10-gallon drums. Let X represent the number of drums ordered by a randomly chosen customer. Assume X has the following probability mass function: a. Find the mean number of drums ordered. b. Find the variance of the number of drums ordered. c. Find the standard deviation of the number of drums ordered. d. Let Y be the number of gallons ordered. Find the probability mass function of Y. e. Find the mean number of gallons ordered.
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Ответ:
Hi, there!!!
The answer would be 2(2x-1)/x(x-4).
See explanation in picture.
Hope it helps...