Florida National Different Types of Probabilities Multiple Choice Questions

2.5 PointsWhat are the boundaries of the class 12-16?

1. 11.5 and 16.5
2. 10 and 18
3. 12 and 16
4. 4

2.5 PointsA Pareto chart arranges data from largest to smallest according to frequencies.

1. True
2. False

2.5 PointsFind the range of the set of values 4, 15, 3, 10, and 5.

1. 3
2. 15
3. 9
4. 12

2.5 PointsA weighted mean is used when the values of the data set are not all equally represented.

1. True
2. False

2.5 PointsFind the median for the following data. 6, 7, 4, 5, 3, 7, 4

1. 3
2. 4
3. 5
4. 7

2.5 PointsWhat is the median of the following set of values? 8, 6, 3, 1, 12

1. 3
2. 5
3. 6
4. 7

2.5 PointsIf a data set has 9 values and a standard deviation 9.4, then the variance is ________.

1. 88.4
2. 3.1
3. 29.5
4. 28.2

2.5 PointsWhat is the mean of the following data set? 5, 9, 12, 13, 14

1. 8.0
2. 10.6
3. 12.0
4. 15.4

2.5 PointsWhat is the mode of the following data set? 8, 22, 20, 16, 20, 18, 15

1. 14
2. 18
3. 16
4. 20

2.5 PointsA coin is tossed 5 times. Find the probability that all 5 tosses are tails.

2.5 PointsIf a red suit is drawn from an ordinary deck of cards, what is the probability that the card is a diamond?

2.5 PointsA gumball machine contains 300 grape flavored balls, 400 cherry flavored balls, and 500 lemon flavored balls. What is the probability of getting 1 grape ball, 1 cherry ball, and 1 lemon ball if each ball was removed and then replaced before choosing the next from the machine?

1. 0.0264
2. 0.0531
3. 0.0347
4. 0.0482

2.5 PointsA probability experiment has two steps. There are two possible results for the first step, call them “A” and “B”. If the result for the first step was “A”, then there would be 5 possible results for the second step. If the result for the first step was “B”, then there would be 16 possible results for the second step. How many possible outcomes are there for this experiment?

1. 80
2. 10
3. 16
4. 21

2.5 PointsIf a sportscaster makes an educated guess as to how well a team will do this season, he is using what type of probability?

1. classical probability
2. conditional probability
3. empirical probability
4. subjective probability

2.5 PointsWhen two events are independent, the probability of both occurring is:

2.5 PointsIf a coin is tossed three times, the probability that the coin lands on heads at least one of those three times is 7/8.

1. True
2. False

2.5 PointsWhat is the set of all possible outcomes of a probability experiment?

1. an outcome
2. the sample space
3. events
4. a Venn diagram

2.5 PointsContinuous random variables are obtained from data that can be measured rather than counted.

1. True
2. False

2.5 PointsFind the mean of the distribution shown below. X234P(X)0.350.240.41

1. 1.56
2. 2.06
3. 2.56
4. 3.06

2.5 PointsA university has 10,000 students of which 35% are male and 65% are female. If a class of 30 students is chosen at random from the university population, find the mean and variance of the number of male students.

1. Mean = 19.5, Variance = 2.6
2. Mean = 10.5, Variance = 2.6
3. Mean = 19.5, Variance = 6.8
4. Mean = 10.5, Variance = 6.8