ECON 219 Study Guide - Quiz Guide: Exponential Distribution, Poisson Distribution, Eurelia

• School: McGill University
• Department: Economics (Arts)
• Course: ECON 219
• Professor: Kenneth Mac Kenzie

Document Summary

Find and the covariance of x and y. The independence criterion holds in two of the cells. If y is positive, what is the probability that x is positive? a) b) c) d) A group of 60 stocks includes 36 that have increased in value since. November 1st, and 24 that have decreased since november 1st. a) b) c) A. j. jones has taken a random sample of 6 stocks from the group, and would like to calculate (before looking to see, of course) the probability of having picked at least 4 of the stocks that have increased in value. He can"t remember whether to use the binomial or hypergeometric formula. Help him out by demonstrating that for three decimal places of accuracy he can use either one. If the stocks are examined in a random manner one-by-one, Let x be the number of stocks that have been examined when the first decreased-value stock is found.