the old machine filled 12 soda cans with an average of 11.9 oz of soda with a standard deviation of 0.3 ounces. the new machine still fills them (11 cans) with an average of 12.1 ounces, with a...

the old machine filled 12 soda cans with an average of 11.9 oz of soda with a standard deviation of 0.3 ounces. the new machine still fills them (11 cans) with an average of 12.1 ounces, with a standard deviation of 0.3 oz. is the new machine filling with significantly more than the old machine? (a=.05) show all work please