Discrete Probability Distributions
Discrete Probability Distributions
Problem 3
Determine whether the random variable is discrete or continuous.
1. The amount of rain in Seattle during the April.
2. The number of customers arriving at a bank between noon and 1:00 pm.
3. The number of athletes participating in the 2016 Summer Olympics.
4. The time required to download a file from the internet.
5. The distance traveled from your work to your home.
According to the High School Athletics Participation Survey, 55% of students enrolled in high school participate in athletic programs. Suppose 12 high school students are randomly selected and the number who participate in athletic programs is recorded. Round probabilities to 4 decimal places.
6. Explain why this is a binomial experiment.
7. Find and interpret the probability that exactly 7 high school students participate in athletic programs.
8. Find and interpret the probability that fewer than 7 high school students participate in athletic programs.
9. Find and interpret the probability that at least 7 high school students participate in athletic programs.
10. Compute the mean and standard deviation of the binomial random variable.
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