Discrete random variables are this, unlike continuous random variables
What is countable?
100
In order for something to be a discrete probability distribution, all probabilities must be between or equal to these two values.
What are 0 and 1?
100
This is the probability of a binomial distribution where the probability of success is .34, and we are looking for exactly 5 successes out of 15 trials.
What is .214 or 21.4%?
100
This is the probability that the first success of a series of trials is on the 5th trial when the probability of success is 0.38.
What is 0.056 or 5.6%?
200
The probability distibution that looks for the number of successes within a set number of trials.
What is a Binomial distribution?
200
If you have a discrete probability distribution, all probabilities must add up to this number.
What is 1?
200
The probability that a student answered yes to the question, "Do you do your homework?", is 4 out of 7. This is the probability that out of 100 students 43 said that they do their homework.
What is 0.069 or 6.9%?
200
The probability that a typical bag of potato chips is under filled is 68%. This is the probability that the first bag of potato chips bought from a vending machine that is under filled is the 6th bag of chips bought.
What is 0.0022 or .22%?
300
The expected value of a probability distribution is equal to this.
What is the mean?
300
If the following is a discrete probability distribution, fill in the missing probability:
0 0.12
1 0.16
2 0.24
3 0.32
4 ?
5 0.05
What is 0.13?
300
The probability that one might grab an orange skittle out of a packet of skittles is 20%, if there are 24 skittles in a particular bag, this is the probability of finding at least 4 orange skittles.
What is .46 or 46%?
300
This is the probability that the on a multiple choice quiz with 4 options for each question, if you randomly select answers, your first correct answer will be on the 4th question.
What is 0.105 or 10.5%?
400
The similarities of Binomial and Geometric Distribution.
What are
-independent
-has 2 possible outcomes
400
This is the expected number of tires that were under inflated when a mechanic checked the tire pressures on cars in one week, which resulted in the following probability distribution.
x P(x)
0 0.3 1 0.25 2 0.25 3 0.15
4 0.05
What is 1.4 tires?
400
This is the probability that more than 7 out of 10 surgeries will be successful when the probability of having a successful surgery is 90%.
What is .93 or 93%?
400
The probability that a randomly selected Xbox fresh off the assembly line is defective is 9%. The probability that the first defective Xbox that comes off the assembly line is the 7th or 8th off the line is this.
What is .0976 or 9.76%?
500
The probability distribution that looks for the of the first time a success occurs, after a number of failures.
What is a geometric probability distribution?
500
This is the mean of the probability distribution below. It describes the number of televisions per household in a small town.
x P(x)
0 0.01 1 0.17 2 0.28 3 0.54
What is 2.35 tvs?
500
When the probability of single television being defective is 14%, this is the probability that, out of 20 tvs, between 8 and 13 tvs inclusive are defective.
What is .018 or 1.8%?
500
The probability Wes Welker, on the New England Patriots, drops a pass is .14. This is the probability that he does not drop any of the first 5 pass he is thrown.