A pair of dice is rolled 500 times with the sums in Table 12.2 showing on the dice: Sum 2 3 4 5 6 7 8 9 10 11 12 Observed 15 35 49 58 65 76 72 60 35 29 6 The expected number, if the dice are fair, are...

A pair of dice is rolled 500 times with the sums in Table 12.2 showing on the dice:

The expected number, if the dice are fair, are determined from the distribution of x as in Table 12.3.

We have the observed and expected frequencies in Table 12.4.