Simple Distribution

You select a card from a standard deck. Find the probability of selecting an ace.

• 0.01923

• 0.5000

• 1.000

• 0.2500

• 0.07692

You select a card from a standard deck. Find the probability of selecting a J, Q, K, or A. Mark only one oval.

• 0.153

• 1.000

• 0.5000

• 0.07692

• 0.3077

A company is conducting a telephone survey of randomly selected individuals to get their overall impressions of the past decade (2000s). So far, 1504 people have been surveyed. The frequency distribution shows the results. What is the probability that the next person surveyed has a positive overall impression of the 2000s?

• 0.2699

• 0.07692

• 0.3000

• 0.5000

• 0.153

A company is conducting a telephone survey of randomly selected individuals to get their overall impressions of the past decade (2000s). So far, 1504 people have been surveyed. The frequency distribution shows the results. What is the probability that the next person surveyed will not say that they have a positive overall impression of the 2000s?

• 0.4189

• 0.7300

• 0.3000

• 0.5000

• 0.07692

Is the following a probability distribution?

• Yes, because all of the probabilities are between 0 and 1 inclusive and the sum of all the probabilities is 1.

• No, all probabilities are not be between 0 and 1 inclusive

• No, the sum of all the probabilities is not 1.

• Yes, because the distribution is symmetric

A marketing survey compiled data on the number of cars in households. If X = the number of cars in a randomly selected household, and we omit the rare cases of more than 5 cars, then X has the probability distribution shown. What is the probability that a randomly chosen household has at least two cars?

• 0.20

• 0.29

• 0.39

• 0.61

Is this a probability distribution?

• No

• Yes

The following table represents the probability distribution X, the employment status of adults in a city.

What is the probability that the adults isn't retired?

It is the mathematical function that gives the probabilities of occurrence of different possible outcomes for an experiment.

You survey a sample of 1000 employees at a company and record the age of each. The results are shown in the frequency distribution at the left. If you randomly select another employee, what is the probability that the employee will be between 25 and 34 years old?

• 0.366

• 0.7300

• 0.07692

• 0.5000

• 0.3000