Problem 7 Problem 7a At a 2 % level of significance, conduct a two-tailed test of hypothesis comparing the equality of two population means defined as follows. The first population mean relates to the mean of those values of Variable 6 that have the attribute represented by the "1" code for Variable 1. The second population mean relates to the mean of those values of Variable 6 that have the attribute represented by the "2" code for Variable 1. Use the pooled variance option when conducting this test. In your answer make sure that you show HO and Ha, sketch the sampling distribution showing the critical value(s) and the rejection region. Use your calculator to make all the required computations and also state the decision and conclusion in the context of your survey. Show all your work var ! varle [10 marks] 185 163 210 136 136 190 180 149 1 99 158 170 150 205 140 157 NNNNNN - -. 190 19 8 208 160