MATH SOLVE

3 months ago

Q:
# A company that makes fleece clothing uses fleece produced from two farms, Northern Farm and Western Farm. Let the random variable X represent the weight of fleece produced by a sheep from Northern Farm. The distribution of X has a mean 14.1 pounds and a standard deviation 1.3 pounds. Let the random variable Y represent the weight of fleece produced by a sheep from Western Farm. The distribution of Y has a mean 6.7 pounds and a standard deviation of 0.5 pounds. Assume X and Y are independent. Let W equal the total weight of fleece from 10 randomly selected sheep from Northern Farm and 15 randomly selected sheep from Western Farm. Which of the following is the standard deviation, in pounds, of W?A) 1.3+0.5B) sqrt(1.3^2+0.5^2)C) sqrt(10(1.3)^2+15(0.5)^2)D) sqrt(10^2(1.3)^2+15^2(0.5)^2)E) sqrt((1.3)^2/10 + (0.5)^2/15

Accepted Solution

A:

Answer:i think its D. C. or E. I'm not that great in math im kind of struggling thru it