STAB22H3 Final: STAB22 Final Exam 2012 Final Solutions
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STAB22H3 Full Course Notes
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Because we have limited the research to man about the relations between. This three factors have been used, and should not be the lurking variables. The left variables, i. e. the income and age, can be lurking variable. Cause we only know the median, it is not enough to determine the result. If we want to compute the probability, we need the distribution function of the lifespan of that light bulb. We have known, p (a) = 0. 2, p (b) = From the conditional probability formula, p (b|a) = p (ab) The sampling variability is that the same statistic computed from a num- ber of random samples drawn from the same population is di erent. Set xi = 1, if the i-th people is larger than 35. 7. The median age of the population is 35. 7, then the probability of xi equals 1 or 0 are both 0. 5. Thus, xi bernoulli(0. 25), = 0. 5, 2 = 0. 25.
