# Question

In a class, there are 4 freshman boys, 6 freshman girls, and 6 sophomore boys. How many sophomore girls must be present if sex and class are to be independent when a student is selected at random?

## Answer to relevant Questions

A simplified model for the movement of the price of a stock supposes that on each day the stock’s price either moves up 1 unit with probability p or moves down 1 unit with probability 1 − p. The changes on different days ...Barbara and Dianne go target shooting. Suppose that each of Barbara’s shots hits a wooden duck target with probability p1, while each shot of Dianne’s hits it with probability p2. Suppose that they shoot simultaneously ...On the morning of September 30, 1982, the won–lost records of the three leading baseball teams in the Western Division of the National League were as follows: Each team had 3 games remaining. All 3 of the Giants’ games ...In successive rolls of a pair of fair dice, what is the probability of getting 2 sevens before 6 even numbers? Show that 0 ≤ ai ≤ 1, i = 1, 2, . . ., then Suppose that an infinite number of coins are to be flipped. Let ai be the probability that the ith coin lands on heads, and consider when the first head occurs.Post your question

0