- A Company That Makes Fleece Clothing Uses Fleece Produced From Two Farms Northern Farm And Western Farm Let The Random 1 (97.32 KiB) Viewed 25 times
squared the standard deviation and multiply by a constant on the
question "A company that makes fleece..." , but it is wrong on the
question "Research indicates that the..."
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 mean 14.1 pounds and 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 Yhas mean 6.7 pounds and standard deviation 0.5 pound. Assume X and Yare independent. Let Wequal 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 +0.5 B V1.32 +0.52 V10(1.3)” + 15(0.5)? + D V 10²(1.3)2 + 152 (0.5) + © 1.32 V 10 + 0.52 15
Research indicates that the standard deviation of typical human body temperature is 0.4 degree Celsius (C). Which of the following represents the standard deviation of typical human body temperature in degrees Fahrenheit (F), where F = C + 32? = A § (0.4) + 32 B (0.4) (0.4) Х 0 (*)*(0,4) E ( )(0.4)