Repeat the previous exercise, except that this time there are 79 toddlers choosing among toys that come in a total of four different colors. The number of toddlers preferring each color is as follows:

a. 21 chose red, 14 chose blue, 26 chose yellow, 18 chose green.

b. The same toddlers were tested a year later with the following results: 28 chose red, 20 chose blue, 9 chose yellow, 22 chose green.

Data from previous exercise

A developmental researcher has observed that in a random sample of 60 toddlers, 27 preferred blue toys, 19 preferred red toys, and 14 preferred green toys. Perform a chi-square test of the null hypothesis that, in the entire population of toddlers, the preference for these three colors is equally divided.