Use for questions 2-5: The number of days a group of 250 homes is on the market is normally
distributed with a mean of 50 and a standard deviation of 13. Label the normal distribution curve, then
answer the questions.
2. What percent of the homes are on the market between 11 and 89 days?
3. What is the probability that a home is on the market at least 37 days?

Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables

Over the course of a month, a person's weight decreases. what type of relationship is this? a. positive relationship