Engin 7 15 A soft drink firm is evaluating an investment in a new type of canning machine The company has already determined that it will be able to fill more cans per day for the same cost if the new ma chines are installed However it must determine the variability of fills using the new machines and wants the variability from the new machines to be equal to or smaller than that currently obtained using the old machines A study is designed in which random samples of 40 cans are selected from the output of both types of machines and the amount of fill in ounces is determined The data are given below Old Machine New Machine 16 19 16 54 15 92 16 29 16 44 16 29 15 64 15 81 16 20 16 36 16 36 16 05 16 07 16 04 16 56 16 42 16 08 16 47 16 02 16 74 16 08 16 31 16 50 16 14 16 12 16 30 16 41 16 11 16 06 16 64 16 40 16 40 16 28 16 66 16 20 16 29 15 75 16 22 16 12 16 23 16 19 16 59 16 36 16 27 16 43 16 26 16 31 16 59 16 08 16 07 16 15 16 50 16 25 16 25 16 19 16 13 16 15 16 17 16 32 16 81 16 27 17 09 15 96 16 02 16 29 15 99 15 99 16 42 16 15 16 23