21. If the F statistic is 0.98 and the critical value is 1.98, the comparison of means test for normally distributed data should be? a. T-test, equal var. b. T-test unequal var. c. non-parametric test d, None of the previous 24. It costs S6 to make product A and S8 to make product B. Product A sells for $9 and product B sells for $14. What would you use in the objective function to maximize the profit. a. 6 A+8 B 25. The intercept in a linear regression equation is? a. Where the prediction line crosses the y axis? d. None of the above c. d. Both a and b Neither a nor b b. A "fudge" factor for the prediction line 31. What data distribution does the Gamma Distribution become when the alpha parameter is 1? a. Uniform b. Normal d. None of the above c. Exponential What percent of observations would be found between plus and minus 2 standard deviations of the mean for a normally distributed process? 35. b. 95c. 99.7 d. None of the above a, 68 United States)