Engineers at an oil refinery find out how easily gasoline evaporates by measuring its vapor pressure. as they make gasoline, they need to determine whether its vapor pressure is high enough. the standard deviation of the vapor pressure of the gasoline made by the refinery is always 0.03 (pounds per square inch). which hypothesis test would be most appropriate for this task?
question options:
a. one sample z-test
b. one sample t-test
c. paired-samples t-test
d. two sample t-test

The population of a small rural town in the year 2006 was 2,459. the population can be modeled by the function below, where f(x residents and t is the number of years elapsed since 2006. f(t) = 2,459(0.92)

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations