A random sample of 20 brand X corned beef while 15 samples of brand Y corned beef were taken, and the data of their mean weight in grams were shown below. Is there a significant difference in the mean net weight of the two brands of corned beef? Set the level of significance at 5%. (the output range should be at cell G4)
Brand X 160, 165, 176, 157, 170, 165, 167, 166, 159, 160, 170, 156, 145, 155, 150, 159, 165, 166, 150, 148
Brand Y 145, 168, 165, 144, 166, 155, 178, 155, 149, 156, 150, 155, 156, 147, 150
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