Task 8 A manufacturer is comparing the settings of two machines, M1 and M2, which should produce rods of the same length

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Task 8 A Manufacturer Is Comparing The Settings Of Two Machines M1 And M2 Which Should Produce Rods Of The Same Length 1 (27.55 KiB) Viewed 93 times

Task 8 A manufacturer is comparing the settings of two machines, M1 and M2, which should produce rods of the same length. Both have, over a long period, given rods whose lengths were normally distributed with variance 37 cm². Although the two machines are supposed to given the same length of rod, he suspects that this is not so. Examine this suspicion, if the total length of 15 rods from M1 is 513 cm, and the total length of 20 rods from M2 is 575 cm. Use a = 0.05. [2 test = 2.6231; reject Hol