A doctor keeps track of the number of babies she delivers in each season. She expects that the distribution will be uniform (the same number of babies in each season). The data she collects is shown in the table below. Find the test statistic,20, for the chi-square goodness-of-fit test. Round the final answer to three decimal places.

=k(OE)2E

Season Spring Summer Fall Winter

Expected 62 62 62 62

Observed 49 48 56 53

chi-square test statistic=