2–45. In problem 2–33, are “dividends paid” and “price increase” independent events? 2–33. An investment analyst collects data on stocks and notes whether or not dividends were paid and whether or not the stocks increased in price over a given period. Data are presented in the following table. Price No Price Increase Increase Total Dividends paid 34 78 112 No dividends paid 85 49 134 Total 119 127 246.  a. What is the probability that a randomly selected stock neither paid dividends nor increased in price b. Given that a stock increased in price, what is the probability that it also paid dividends? c. If a stock is known not to have paid dividends, what is the probability that it increased in price? d. What is the probability that a randomly selected stock was worth holding during the period in question; that is, what is the probability that it increased in price or paid dividends or did both?

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2–45. In problem 2–33, are “dividends paid” and “price increase” independent events?

2–33. An investment analyst collects data on stocks and notes whether or not dividends were paid and whether or not the stocks increased in price over a given period. Data are presented in the following table. Price No Price Increase Increase Total Dividends paid 34 78 112 No dividends paid 85 49 134 Total 119 127 246. 

a. What is the probability that a randomly selected stock neither paid dividends nor increased in price

b. Given that a stock increased in price, what is the probability that it also paid dividends?

c. If a stock is known not to have paid dividends, what is the probability that it increased in price?

d. What is the probability that a randomly selected stock was worth holding during the period in question; that is, what is the probability that it increased in price or paid dividends or did both?

 

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