Yprobability 10 0.10 20 0.25 30 0.05 40 0.30 50 0.20 60 0.10 the probability distribution of y, a discrete random variable, is given in the table. what is the expected value of y? a. 25.0 b. 26.5 c. 35.0 d. 35.5

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?

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

Find measure angle 1 and measure angle 3 in the kite the diagram is not drawn on the scale