A new method of storing snap beans is believed to retain more ascorbic acid than the old method. In an experiment, snap beans were harvested under uniform conditions and frozen in 29 equal-size packages. 11 of those packages were randomly selected and stored according to the new method, and the other 18 packages were stored by the old method. Subsequently, ascorbic acid determinations (in mg/kg) were made, and the following summary statistics were calculated. New Method Old Method (sample) mean ascorbic acid 429 405 (sample) standard deviation 17 47 a) Perform a full analysis for a onesided alternative at 5% signicance level. (If you choose to calculate by hand, using the conservative df; otherwise using the exact clf). (5 pts) b) Now suppose we know the two population variance are equal. Test the same hypothesis. (3 pts)