Monthly incomes of employees at a particular company have a mean of $5954. the distribution of sample means for samples of size 70 is normal with a mean of $5954 and a standard deviation of $259. suppose you take a sample of size 70 employees from the company and find that they're mean monthly income is $5747. how many standard deviation is the sample mean from the mean of the sample lien distribute distribution

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.