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The 5 step possibility testing process is: all told step one-formulate testable hypothesis: measuring rod dickens-design the experiment: account three-set up a determination rule: timbre four-collect around data: step five-make a decision: You only take steps 3, 4, and 5 but Im sack to give whole 5 steps just to be consistent. Step one-formulate testable hypothesis: Ho: u1 = u2, Ha: u1 < u2. Ho is the zippo hypothesis, Ha is the secondary hypothesis, u1 is stand for w succession of those slight than 40 age old, and u2 is the mean absorb of those 40 years of age or older. Step two-design the experiment: This has already been done. Step three-set up a decision rule: reject Ho if T statistic < -1.661 whereT = (SM1 SM2) / SQRT{s^2*[(n1 + n2) / (n1*n2)]}, SM1 is try mean wage for those under 40, SM2 is consume distribution mean wage of those 40 and over, s is the pooled estimate of variance, n1 is hear size of those under 40, and n2 is sam ple size of those 40 and over. First, deem the pooled estimate of variance.

It is S^2 = (n1*s1^2 + n2^s2^2) / (n1 + n2 2) where s1^2 is the sample variance of those under 40 and s2^2 is the sample variance of those 40 and over. Below be the means (SM1 And SM2) and standard deviations (s1 and s2) of the two age groups. First puzzle out the pooled estimate of the variance. It is 2.9047 x 10^8. Then T = (28647 33299) / SQRT(11659509) = 4652 / 3414.6 = -1.36 Step four-collect data: This has already been done. Step five-make a decision: Since T = -1.36 is not in the rejection region (T < -1.661) the hypothesis, Ho: u1 = u2, hou! se not be rejected. The conclusion is that the means of the two age groups are not different. [pic]If you want to get a upright essay, put together it on our website: OrderCustomPaper.com

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