Consider the bivariate formulas when solving the following questions please

Are low-fat diets or low-carb diets more effective for weight loss? A sample of 78 subjects went on a low-carbohydrate diet for six months. At the end of that time, the sample mean weight loss was 15.0 pounds with a sample standard deviation of 7.77 pounds. A second sample of 74 subjects went on a low-fat diet. Their sample mean weight loss was 16.3 with a standard deviation of 6.10. Can you conclude that the mean weight loss differed between the two diets? Use the a = 0.01 level. i). State the appropriate null and alternate hypotheses. ii). Compute the test statistic. iii). How many degrees of freedom are there, using the simple method? iv). Do you reject Ho? State a conclusion.A branch of statistics concerned with making general conclusions about a population from information contained in a sample is, Inferential statistics Descriptive statistics Quantative statistics Qualatitive statistcsQuestion 20 - Bivariate Distribution : Bivariate Distribution 1.0 06 04 0.2 0.0 Bivariate Distribution: Consider the experiment of picking a point (X, Y) from the right triangle above. The joint distribution of (X, Y) is given by: f(x, y) = c, for 0