Question 1183962

χ2 = {{{sum((O[k] - E[k])^2/E[k], k=1,3) = (7 - 10)^2/10 + (9 - 10)^2/10 + (14 - 10)^2/10  = 9/10 + 1/10 + 16/10 = 2.6}}}.


For d.f. = 3 - 1 = 2,  p-value = P(χ2 > 2.6) = 0.27 > 0.10, hence do NOT reject the null hypothesis that the three categories are equally likely.


***Chi-square probability was taken from https://stattrek.com/online-calculator/chi-square.aspx.