Private nonprofit four-year colleges charge, on average, $26,094 per year in tuition and fees. The standard deviation is $7,155. Assume the distribution is normal. Let X be the cost for a randomly selected college. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N(
,
)

b. Find the probability that a randomly selected Private nonprofit four-year college will cost less than 22,107 per year.

c. Find the 69th percentile for this distribution. $
(Round to the nearest dollar.)

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°

Astudent is determining the influence of different types of food on the growth rate of spiders. she feeds one group of spiders two caterpillars twice a week. the other group received similarly-sized beetles twice a week. she records the amount of time required for individuals to reach sexual maturity. her hypothesis is that the spiders feeding on caterpillars will have a faster growth rate because caterpillars have a higher protein content compared to beetles. in this experiment, what is the dependent variable? spiders assigned to different feeding groups. time required to reach sexual maturity number of prey items fed twice a week. growth rates of each group.