Discrete Probability Distributions
HW Questions with Accurate
Answers
A die is rolled. If it rolls a 1, 2, or 3, you win $2. If it rolls to a 4, 5, or 6, you lose $1.
Calculate the expected winnings. correct answer $0.50
A discrete random variable correct answer can be treated as continuous when it
has a large range of values
A fair die is rolled. If it comes up 1 or 2 you win $2. If it comes up 3, 4, 5, or 6, you
lose $1. Calculate the expected winnings. correct answer $0.00
A random variable is binomially distributed with n = 16 and π = .40. The expected
value and standard deviation of the variables are correct answer 6.40 and 1.96.
Arrival of cars per minute at a toll booth may be characterized by the Poisson
distribution if correct answer the arrivals are independent
Assume 30 percent of the population has a nut allergy. Which of the following
distributions is most appropriate to describe the number of people eating in a
specific restaurant on Friday evening who have a nut allergy? correct answer
Poisson
Assume 30 percent of the population has a nut allergy. Which of the following
distributions is most appropriate to describe the number of people in a sample of
42 who have a nut allergy? correct answer binomial
HW Questions with Accurate
Answers
A die is rolled. If it rolls a 1, 2, or 3, you win $2. If it rolls to a 4, 5, or 6, you lose $1.
Calculate the expected winnings. correct answer $0.50
A discrete random variable correct answer can be treated as continuous when it
has a large range of values
A fair die is rolled. If it comes up 1 or 2 you win $2. If it comes up 3, 4, 5, or 6, you
lose $1. Calculate the expected winnings. correct answer $0.00
A random variable is binomially distributed with n = 16 and π = .40. The expected
value and standard deviation of the variables are correct answer 6.40 and 1.96.
Arrival of cars per minute at a toll booth may be characterized by the Poisson
distribution if correct answer the arrivals are independent
Assume 30 percent of the population has a nut allergy. Which of the following
distributions is most appropriate to describe the number of people eating in a
specific restaurant on Friday evening who have a nut allergy? correct answer
Poisson
Assume 30 percent of the population has a nut allergy. Which of the following
distributions is most appropriate to describe the number of people in a sample of
42 who have a nut allergy? correct answer binomial
