Cannot do tables or histograms here.
c. This is the probability of picking either 2 or 3 red marbles.
P(2) = 4/9 * 3/8 * 5/7
P(3) = 4/9 * 3/8 * 2/7
Either-or probabilities are found by adding the individual probabilities.
A box contains 4 red and 5 blue marbles. Michele picks three marbles at random from this box. If Z is a random variable representing the # of blue marbles picked from the box, do the following.
a. Express the probability mass function of Z in tabular form.
b. Draw the corresponding histogram.
c. Compute the probability that Michele can pick more red marbles than blue from the box.
2 answers
Can i ask why you multiplied it to 3/8 and 5/7 or 2/7?
1 answer