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A company is doing a hypothesis test to determine two machines to determine which produces less variation in package size. Both distributions are...
A company is doing a hypothesis test to determine two machines to determine which produces less variation in package size. Both distributions are normal. and the populations are independent. Use = a (I can't make the funny looking symbol on my keyboard) = .01
Ho : o 12 = o 22
Ha : o 12 = > o 22
A sample from the first machine has a standard deviation of 4.8386 with a sample size of 17.
A sample from the second machine has a standard deviation of 4.4348 with a sample size of 30.
(A)The test statistic is ____________(answer accurate to two decimal places)
(B)Thus the decision is:
reject the null hypothesis OR fail to reject the null hypothesis
