One day you visited Coffee Planet and observed people what they are drinking and write it down. Categorize the drinks as Variable 1 (X, Y, Z). Also observed the age group say variable 2 of the customers (A, B, C). Variable 1 X Y Z Total A 165 Variable 2 B 140 C 195 +M Total 120 205 + M 175 The observed values in the cells must be counts, which are nonnegative integers. Calculate the expected counts for the cells under the assumption that the two variables are independent using one percent significance level. Based on your calculations, explain why it is impossible for the test statistic to have a value of zero