Question 1
0 out of 4 points
As N increases, the binomial distribution _________.
Question 2
0 out of 4 points
Your introductory psychology class has 189 males and 261 females. If you randomly sample 40 of these classmates, what is the probability you will get at least 32 females?
Question 3
0 out of 4 points
Assuming the binomial distribution is appropriate, if N = 10 and P = 0.30, the probability of getting at least 8 P events is _________.
Question 4
0 out of 4 points
If Q = 0.30 then P equals _________.
Question 5
0 out of 4 points
Assuming the binomial distribution is appropriate, if N = 7, P = 0.40, and the number of P events = 2, the number of Q events = _________.
Question 6
0 out of 4 points
In one flip of 10 unbiased coins, what is the probability of getting 8 or more heads?
Question 7
0 out of 4 points
A local microbrewery believes it produces the best tasting dark beer in town. To make its case, seven volunteers are asked to participate in a beer tasting contest. Each volunteer is asked to taste 5 dark beers and to pick the one he/she prefers. Of the 5 dark beers, one is microbrewery’s and the other 4 are national favorites. What is the probability that all 7 volunteers pick the microbrewery’s beer? Assume there is no taste preference for any of the beers and that chance alone determines each selection.
Question 8
0 out of 4 points
Assume your friend just took an exam made up of 20 true/false questions. Further assume that your friend had no knowledge relevant to the questions, and consequently just guessed the answer to each question What is the probability your friend will pass the exam. Each question has the same weight and 60% or more correct answers results in a passing grade.
Question 9
0 out of 4 points
The binomial expansion equals _________.
Question 10
0 out of 4 points
A true-false test of 20 questions is given to 10,000 students. If all the students guess on each question, how many students would you expect to get 17 or more questions correct?
Question 11
0 out of 4 points
A local microbrewery believes it produces the best tasting dark beer in town. To make its case, seven volunteers are asked to participate in a beer tasting contest. Each volunteer is asked to taste 5 dark beers and to pick the one he/she prefers. Of the 5 dark beers, one is microbrewery’s and the other 4 are national favorites. What is the probability that none of the volunteers pick the microbrewery’s beer? Assume there is no taste preference for any of the beers and that chance alone determines each selection.
Question 12
0 out of 4 points
The binomial distribution is symmetrical _________.
Question 13
0 out of 4 points
For the binomial distribution to be applicable to a situation,
Question 14
0 out of 4 points
P0 equals _________.
Question 15
0 out of 4 points
In a situation where there are only two possible events, A and B, on each trial, if P = Q on each trial
Question 16
0 out of 4 points
A local microbrewery believes it produces the best tasting dark beer in town. To make its case, seven volunteers are asked to participate in a beer tasting contest. Each volunteer is asked to taste 5 dark beers and to pick the one he/she prefers. Of the 5 dark beers, one is microbrewery’s and the other 4 are national favorites. What is the probability that at least 5 of the volunteers pick the microbrewery’s beer? Assume there is no taste preference for any of the beers and that chance alone determines each selection.
Question 17
0 out of 4 points
What is the probability that one can call the flip of a coin correctly at least 6 out of 7 times assuming that the coin is fair?
Question 18
0 out of 4 points
If P = 0.40 for the probability of getting a head on any one flip of the coin, then _________.
Question 19
0 out of 4 points
The binomial distribution is _________ symmetrical.
Question 20
0 out of 4 points
Suppose you gave a multiple-choice exam with 16 questions on it. Each question has 4 alternatives. What is the probability that a student who guesses at random on each of the 16 questions will score 4 or fewer correct answers? Assume that each alternative to each question is equally likely to be chosen.
Question 21
0 out of 4 points
If an event has 3 possible outcomes, then one cannot use the binomial distribution in analyzing the results.
Question 22
0 out of 4 points
A local microbrewery believes it produces the best tasting dark beer in town. To make its case, seven volunteers are asked to participate in a beer tasting contest. Each volunteer is asked to taste 5 dark beers and to pick the one he/she prefers. Of the 5 dark beers, one is microbrewery’s and the other 4 are national favorites. What is the probability that exactly 3 of the volunteers pick the microbrewery’s beer? Assume there is no taste preference for any of the beers and that chance alone determines each selection.
Question 23
0 out of 4 points
Evaluated over a large number of pitches, a varsity women softball pitcher threw 1400 strikes and 600 balls. Assuming things remain the same, what is the probability she will throw at least 35 strikes in her next 40 pitches. Assume independence between throws.
Question 24
0 out of 4 points
What is the probability of 4 heads turning up out of four tosses of the coin if the probability of any one head is P = 0.40?
Question 25
0 out of 4 points
The requirements for the binomial distribution are _________.
