A bag of gumballs contains 2 pink, 3 orange, 4 blue, 2 red, and 1 yellow gumballs. Pierre selects two gumballs from the bag, without
replacement.
What is the probability that Pierre selects a yellow and a pink gumball?

(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.)