19. ggin Spinning. Suppose you are testing the claim that a coin comes up tails more than 50% of the time when the coin is spun on a hard surface. Steps 1 and 2 of the hypothesis test are given. Suppose that you did this experiment and got 22 tails in 30 spins. Find the value of the test statistic z and corresponding p-value. (8.31) p is the proportion of tails Step #1: Ho : p = 0.50 Ha : p > 0.50 Step #2: Assume that the outcomes are random and the sample size is large enough be both np and n(l-p) are 15