Jerry had 45 tickets for games at a carnival. he used 1/3 of the tickets to play ball-toss game. He used 2/5 of the tickets to play the ring -toss game, he saved the rest for the following day. How many tickets did jerry have after playing these games? A:19
B:12
C:21
D:18

(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.)