A random sample of n people selected from a large population will be asked whether they have read a novel in the past year. Let the random variable r represent the number of people from the sample who answer yes. The variance of random variable r is 6. Assume the responses are independent of each other. If the proportion of people from the population who read a novel in the past year is 0. 40, which of the following is the best interpretation of random variable r ?.

Which best describes standard precautions?

Jim has found that he must consume 2,300 calories a day to reach his health goals, but he doesn't want to give up his afternoon snack of pretzels. unfortunately, he tends to eat the entire bag — which amounts to 1,300 calories! what strategy should jim use to improve his habits?

Apopulation of deer mice was introduced into a desert ecosystem. being dark-colored, the deer mice stood out in the sand and were easy prey for predators. over a few years, the color of the mice changed from dark brown to light brown. what role does natural selection play in this example? a. the change of color camouflaged them, which them hunt better. b. the change of color enabled them to regulate their body temperature. c. the change of color allowed them to hide better from predators. d. the change of color made their bodies tolerant to the harsh desert sand. e. the change of color allowed them to deflect the excessive heat.