We want to know if American's and Canadian's have the same average height. We observe 8 Americans and 8 Canadian's and measure their heights in inches. Perform a difference of means hypothesis test and tell me what your results say with respect to the null hypothesis. (Remember you have to calculate the vananee for each variable using the equation with n-l in the denominator). IF YOU SO CHOOSE, YOU CAN DO ALL THE CALCULATIONS IN R. As you can see there are no points for the intermediate calculation steps and all that really counts is getting the null and alternative hypothesis correct and the conclusion of the hypothesis tests. 1) State the Null and Alternative Hypotheses. (5 phints) 2) Establish your decision criteria and determine t_ critical (df = N1+N22)