Our random number table is supposed to have the numbers 0 through 1 distributed through the table with equal probability. If this is true, then the mean of all the numbers on the table will be 0.50. You want to test this claim, so you collect a sample of 100 random numbers. You find that the mean is 0.460 with a standard deviation of 0.020.

a. Is this strong evidence that the mean of all the numbers on the table is not 0.50? b. How can you tell?