True or False - Answer the following questions as either True or False. (a) One

Question

True or False - Answer the following questions as either True or False.

(a) One ball if randomly selected out of an urn containing red, blue, green, and black balls. It is possible that the probabilities of selecting a red ball is 0.2, a blue ball is 0.4, a green ball is 0.1, and a black ball is 0.4 TRUE or FALSE

(b) Given that there are 3 red balls, 6 blue balls, 2 green balls, and 4 black balls in the urn. The probability of randomly selecting a ball that begins with the letter “b” is 2/3. TRUE or FALSE.

(c) Given the same urn as in part (b). Suppose you select two balls at random from the urn. The probability that the color of both balls begins with the letter “b” is 1/5. TRUE or FALSE

Explanation / Answer

a) True, it is possible if the number of balls are not same.

b) Blue or black

Prob = 10/15 = 2/3

So, true

c)10/15 * 9/14 = 0.43..False

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