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A chemical supply company ships a certain solvent in
Chapter 2, Problem 3E(choose chapter or problem)
A chemical supply company ships a certain solvent 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.
f. Find the variance of the number of gallons ordered.
g. Find the standard deviation of the number of gallons ordered.
Questions & Answers
QUESTION:
A chemical supply company ships a certain solvent 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.
f. Find the variance of the number of gallons ordered.
g. Find the standard deviation of the number of gallons ordered.
ANSWER:
Solution:
Step 1 of 4:
A chemical supply company ships a certain solvent in 10 - gallon drums. If X represents the number of drums ordered by a randomly chosen customer. X has the following probability mass function.
We have to find
- The mean number of drums ordered.
- The variance of the number drums ordered.
- The standard deviation of the number of drums ordered.
- Let Y be the number gallons ordered, then the probability mass function of Y.
- The mean number of gallons ordered.
- The variance of the number of drums ordered.
- The standard deviation of the number of gallons ordered.