in a random sample of 15computers, the mean repair cost was $ 100 and the standard deviation was $ 42.50 Assume that the repair cost of computers follows a normal distribution. construct a 95% confidence interval for the mean repair cost of computers.​

The arctic is a cold deset biome, which one of the answers is not correct? a) animals in cold deserts burrow to get out of the harsh climates. b) vegetation in cold deserts is normally shallow rooted small shrubs. c) animals in cold deserts hibernate most of the year to get out of the cold. d) soils are very heavy and course. e) the region receives less than 10 inches of precipitation annually.