Each front tire on a particular type of vehicle is supposed to be lled to a pressure of 26psi. Suppose the actual air pressure in each tire is a random variable X for the right tire and Y for the left tire, with joint pdf f(x, y) = K(x^2 + y^2) 20 ≤ x ≤ 30, 20 ≤ y ≤ 30
Calculate the correlation coefficient and discuss

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Uestion 1(multiple choice worth 5 points) (05.02)alex wants to paint one side of his skateboard ramp with glow-in-the-dark paint, but he needs to know how much area he is painting. calculate the area of the isosceles trapezoid. isosceles trapezoid with top base 12 feet, bottom base of 18 feet, and height of 6 feet. 72 ft2 84 ft2 90 ft2 108 ft2

The experience c-0.25c can be used to find the cost of an item on sale for 25% off which expression beloit equivalent to c-0.25c