A box contains 5 blue pens and 7 red pens. A pen is selected at random from the box and its color is noted. The pen is replaced back into the box. A second pen is then selected at random from the box. Try to find the probability that: a. The first pen selected is red b. The second pen selected is blue, given that the first pen selected is blue c. The first pen selected is blue and the second pen selected is blue d. The second pen selected is blue e. No blue pen was selected

A box contains 5 blue pens and 7 red pens. A pen is selected at random from the box and its color is noted. The pen is replaced back into the box. A second pen is then selected at random from the box. Try to find the probability that: a. The first pen selected is red b. The second pen selected is blue, given that the first pen selected is blue c. The first pen selected is blue and the second pen selected is blue d. The second pen selected is blue e. No blue pen was selected

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question

a. The first pen selected is red

b. The second pen selected is blue, given that the first pen selected is blue

c. The first pen selected is blue and the second pen selected is blue

d. The second pen selected is blue

e. No blue pen was selected

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