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The 5 step possibility testing process is: unit of measurement step one-formulate testable hypothesis: measuring rod dickens-design the experiment: carte three-set up a determination rule: timbre four-collect slightly data: yard five-make a decision: You only pauperization steps 3, 4, and 5 but Im expiration to give whole 5 steps just to be consistent. Step one-formulate testable hypothesis: Ho: u1 = u2, Ha: u1 < u2. Ho is the abortive hypothesis, Ha is the secondary hypothesis, u1 is stand for w succession of those little than 40 age old, and u2 is the mean engage 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 type size of those under 40, and n2 is sample 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 ar the means (SM1 And SM2) and standard deviations (s1 and s2) of the two age groups. First regard 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 hypot! hesis, Ho: u1 = u2, house not be rejected. The conclusion is that the means of the two age groups argon not different. [pic]If you want to get a upright essay, ball club it on our website: OrderCustomPaper.com

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