Question 1
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 2
0 out of 4 points
The requirements for the binomial distribution are _________.
Question 3
0 out of 4 points
A cat lover wants to know if cats have color vision. She teaches her cat to press a green button to obtain a food reward. She then gives the cat a choice between a green and a red button, but only rewards it when it presses the red button. Position of the button is controlled for. The cat is given several practice trials, and then tested 15 times. If the cat cannot distinguish between red and green, what is the probability that it will push the red button at least 12 times out of 15?
Question 4
0 out of 4 points
Assuming the binomial distribution is appropriate, if N = 6 and P = 0.50, the probability of getting exactly 5 P events = _________.
Question 5
0 out of 4 points
The probability of obtaining a result as extreme or more extreme than 4 heads if 11 coins were tossed and p(H) = 0.35 is _________.
Question 6
0 out of 4 points
P0 equals _________.
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 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 8
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 9
0 out of 4 points
If one of the terms in a binomial expansion were 210P6Q4, what is the value of N?
Question 10
0 out of 4 points
The binomial distribution _________.
Question 11
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 12
0 out of 4 points
In one flip of 10 unbiased coins, what is the probability of getting 8 or more heads?
Question 13
0 out of 4 points
A biased coin is defined as _________.
Question 14
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 fail the exam, if a failing grade is 59% or below?
Question 15
0 out of 4 points
The binomial distribution is _________ symmetrical.
Question 16
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 17
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 18
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 19
0 out of 4 points
Assuming the binomial distribution is appropriate, if N = 12 and P = 0.60, the probability of getting exactly 11 P events is _________.
Question 20
0 out of 4 points
Solving the binomial expansion to 4 decimal places will give more accurate values than the entries in Table B of the textbook.
Question 21
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 22
0 out of 4 points
Assuming the binomial distribution is appropriate, if N = 6 and P = 0.50, the probability of getting exactly 5 P events derives from evaluating which of the term(s) in the following expansion:
P6 + 6P5Q + 15P4Q2 + 20P3Q3 + 15P2Q4 +6PQ5 + Q6
Question 23
0 out of 4 points
Teresa, a star player in women’s college softball, is participating in a home run contest. If the probability she will hit a home run on any pitch is 0.65 what is the probability that out of 10 tries, at least 7 will be home runs?
Question 24
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 25
0 out of 4 points
Consider the binomial expansion for 6 events:
P6 + 6P5Q + 15P4Q2 + 20P3Q3 + 15P2Q4 + 6PQ5 + Q6
What term would you use in evaluating the probability of obtaining exactly 2 heads as the result of flipping an unbiased coin 6 times?
