The boeing 757-200 er airliner carries 200 passengers and has doors with a height of 72 inches. heights of men are normally distributed with a mean of 69.0 inches and a standard deviation of 2.8 inches. if half of the 200 passengers are men, find the probability that the mean height of the 100 men is less than 72 inches.

a)0.0001

b)0.8577

c)0.

d)0.1432

Two spray paint machines are used to paint different portions of a large wall. the first machine (nicknamed "paint pro") is used for two hours. the second machine (nicknamed "goldilocks") is used for an hour and a half. when they are working at the same time, they can paint 55 square feet per minute. together they painted 5850 square feet of wall. how many square feet of wall per minute can each machine paint? e used to paint different portions of a large wall. the first machine (nicknamed "paint pro") is used for two hours. the second machine (nicknamed "goldilocks") is used for an hour and a half. when they are working at the same time, they can paint 55 square feet per minute. together they painted 5850 square feet of wall. how many square feet of wall per minute can each machine paint?

100,000 random people were tested for condition a. roberto's doctor told him he tested positive for condition a. if the test is 99% accurate and condition a is rare—one out of every thousand people have it. what is the probability that testing positive means roberto has condition a? 99.0% 1% 9% 99.9%

What is the measure or x in triangle abc?