Reference no: EM131833915

1. I am able to determine the total lifetime earning s and the age at which they died for an appropriate sample of working people. The correlation between total lifetime earnings and the span is +0.80. The covariance of earnings and life span is 0.64. I concluded that poverty is the cause of premature death. Does this statistical information support this conclusion? Why or Why not?

2. You are studying problem-solving performance, using a measure. The distributions you obtain are typically bimodal. You selected a sample of ten subjects. They either solve the set of problems quickly or take a long time; only rarely do take an intermediate amount of time. You gave the subjects instructions you believe will reduce their mean time for solving the problem set. You want to make a comparison of another sample of ten who did not who did not receive the instruction. Outline an appropriate statistical test and suggest and suggest changes in the plan if necessary