A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 403 gram setting. It is believed that the machine is underfilling the bags. A 26 bag sample had a mean of 399 grams with a variance of 144. Assume the population is normally distributed. Is there sufficient evidence at the 0.02 level that the bags are underfilled

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14