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.

20=k(OE)2E

Season	Spring	Summer	Fall	Winter
Expected	43	43	43	43
Observed	59	53	65	59

Chi-square test statistic =