Testing Fairness of Roulette Wheel The author observed 500 spins of a roulette wheel at the Mirage Resort and Casino. (To the IRS: Isn’t that Las Vegas trip now a tax deduction?) For each spin, the ball can land in any one of 38 different slots that are supposed to be equally likely. When STATDISK was used to test the claim that the slots are in fact equally likely, the test statistic x2 5 38.232 was obtained.

a. Find the critical value assuming that the significance level is 0.10.

b. STATDISK displayed a P-value of 0.41331, but what do you know about the P-value if you must use only Table A-4 along with the given test statistic of 38.232, which results from the 38 spins?

c. Write a conclusion about the claim that the 38 results are equally likely.