:13. A manufacturing plant has two machines that make chocolate bars. There is a suspi cion that one of the machines has a minor fault; 3 bars from each machine are accuratelyr weighed to see if there is a difference between the machines. The measured 1weights are Machine 1 Machine 2 33 .3 3?.3 33.1 34.2 33 .3 3?.3 33 .9 33.4 319 33.3 33 .3 32.9 33 .2 33.3 32.1 33.3 To 5% signicance, is there a difference between the bars produced by each machine? Carefully state an}.r assumptions made in your