Posted by **crystal** on Wednesday, May 9, 2012 at 10:25am.

A jar contains 12 marbles, 5 of which are blue and 7 of which are red. If 4 marbles are

chosen at random and without replacement, what is the probability of selecting 3 blue ones and 1 red

one?

- Statistics -
**crystal**, Wednesday, May 9, 2012 at 10:26am
A delivery truck must make stops in eight different cities, designated by the first letter in

the name of the city: A, B, C, D, E, F, G, and H. If the order in which the truck visits the eight locations

is chosen randomly, what is the probability that it will visit them in alphabetical order?

- Statistics (first Q) -
**PsyDAG**, Wednesday, May 9, 2012 at 12:06pm
First blue = 5/12

Second blue = 4/11

Third blue = 3/10

Red = 7/9

The probability that all/both events occur is found by multiplying the probabilities of the individual events.

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