Goodness of fit Step 1: the null hypothesis will be of the form p1=#, p2=#, ... pk=# Step 3: the test statistic is x2, where Oi is the observed sample frequency for category Step 4: compute the test statistic and P-value Step 5: conclude if there is efficient or not efficient evidence to support the claim 1) The maker of a non-dairy "ice cream" holds a taste test. Subjects taste the non dairy ice cream, as well as three popular brands of ice cream. Of 120 ice cream eaters, 21 selected the non diary ice cream as their favorite, while 42 selected ice cream A, 28 selected ice cream B and 28 selected ice cream C. At the 0.01 level of significance, test the claim that ice cream eaters equally prefer the four different products