7. Y = dropout rate (%) in a certain high school. What are the possible values of each random variable? a. Y = {x|0s x s 10} c. Y = {x|0 s x s 30; d. Y = x|0s xs 100} b. Y = {x|0 s x s 20}

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section: Chapter Questions
Problem 14T: An unbalanced coin is weighted so that the probability of heads is 0.55. The coin is tossed ten...
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Hi. Good day. I need answers for items 7,8, and 9 with explanations. Thank you.
7. Y = dropout rate (%) in a certain high school. What are the possible
values of each random variable?
a. Y = {x|0s xs 10}
b. Y = {x|0s x s 20}
c. Y = {x|0s x s 30}
d. Y = {x|0 s x s 1003}
8. X = number of heads in tossing a coin thrice. What are the possible
values of each random variable?
а. X- (0, 1, 2, 3
b. X = {1, 2, 3}
с. Х - (0, 2, 3;
d. X = {1, 2, 4}
9. A glass of jar contains 40 red, green, blue, and yellow marbles. The
probability of drawing a single green marble at random is 1/5. What
does this mean?
a. There are 5 green marbles in the glass jar.
b. There are 8 green marbles in the glass jar.
c. There are more green marbles than the others.
d. There is only one green marble in the glass jar.
Transcribed Image Text:7. Y = dropout rate (%) in a certain high school. What are the possible values of each random variable? a. Y = {x|0s xs 10} b. Y = {x|0s x s 20} c. Y = {x|0s x s 30} d. Y = {x|0 s x s 1003} 8. X = number of heads in tossing a coin thrice. What are the possible values of each random variable? а. X- (0, 1, 2, 3 b. X = {1, 2, 3} с. Х - (0, 2, 3; d. X = {1, 2, 4} 9. A glass of jar contains 40 red, green, blue, and yellow marbles. The probability of drawing a single green marble at random is 1/5. What does this mean? a. There are 5 green marbles in the glass jar. b. There are 8 green marbles in the glass jar. c. There are more green marbles than the others. d. There is only one green marble in the glass jar.
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