:2. A researcher plans to test the fairness of a roulette
wheel. The results of 3600 spins are recorded. 1750 came up red,
1800 came up black, and 250 came up green. If the wheel is fair,
the chance of red is 18/38, the chance of black is 18/38, and the
chance of green is 2/38.
The observed significance level of the test is
a. less than or equal to 1%
b. bigger than 1%, but less than or equal to 5%

c. bigger than 5%, but less than or equal to 10%

d. bigger than 10%, but less than or equal to 30%

e. bigger than 30%