6.52 Out of 800 families with 4 children each, what percentage would be expected to have (a) 2 boys and 2 girls, (b) at least 1 boy, (c) no girls, and (d) at most 2 girls? Assume equal probabilities for boys and girls.
6.52 Out of 800 families with 4 children each, what percentage would be expected to have (a) 2 boys and 2 girls, (b) at least 1 boy, (c) no girls, and (d) at most 2 girls? Assume equal probabilities for boys and girls.
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 50E: Flexible Work Hours In a recent survey, people were asked whether they would prefer to work flexible...
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![Elementary Probability Theory
6.33
6.52 Out of 800 families with 4 children each, what percentage would be expected to have (a) 2 boys and
2 girls, (b) at least 1 boy, (c) no girls, and (d) at most 2 girls? Assume equal probabilities for boys and
girls.
Probability Distributions
6.53 If X is the random variable showing the number of boys in families with 4 children (see Problem 6.51),
(a) construct a table showing the probability distribution of X and (b) represent the distribution in part
(a) graphically.
6.54 A continuous random variable X that can assume values only between X = 2 and 8 inclusive has a
density function given by a{X + 3}, where a is a constant. (a) Calculate a. Find (b) Pr{3 < X<5},](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8b96b87c-1dd1-487e-b213-0e4788b1ca26%2F918c372d-68e7-4a4c-9eda-c70d47370564%2Fa9dgkyf_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Elementary Probability Theory
6.33
6.52 Out of 800 families with 4 children each, what percentage would be expected to have (a) 2 boys and
2 girls, (b) at least 1 boy, (c) no girls, and (d) at most 2 girls? Assume equal probabilities for boys and
girls.
Probability Distributions
6.53 If X is the random variable showing the number of boys in families with 4 children (see Problem 6.51),
(a) construct a table showing the probability distribution of X and (b) represent the distribution in part
(a) graphically.
6.54 A continuous random variable X that can assume values only between X = 2 and 8 inclusive has a
density function given by a{X + 3}, where a is a constant. (a) Calculate a. Find (b) Pr{3 < X<5},
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