A group if 40 students from your school is part of the audience for a TV game show. The total number if people in the audience is 120. What is the theoretical probability of 3 students from your school being selected as contestants out of 10 possible contestant spots ?

Find the missing dimension extra points

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)

50 points~ ! i have to turn this in tomarrow