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If the probability that a test for a certain disease gives an accurate result is .97, what is the probability that the test gives an inaccurate result?

- .03
- .3
- 1.03
- None of the answers given; click to see the solution.

If A and B are events in a sample space S such that P(A) = .3, P(B) = .5, and P(A B) = .1, find P(A B).

- .7
- .8
- .9
- None of the answers given; click to see the solution.

In a survey of 250 people concerning how they obtain information about current events, 80 people read a newspaper each day, 90 watch news on television each day, and 30 read a newspaper and watch news on television each day. If a person is selected at random from the group surveyed, what is the (empirical) probability that the person does not either read a newspaper or watch news on television each day?

- .44
- 110
- .56
- None of the answers given; click to see the solution.

In a survey of 250 people concerning how they obtain information about current events, 80 people read a newspaper each day, 90 watch news on television each day, and 30 read a newspaper and watch news on television each day. If a person is selected at random from the group surveyed, what is the (empirical) probability that the person reads the newspaper but does not watch the news on television each day?

- .2
- 50
- .32
- None of the answers given; click to see the solution.

In a survey of 250 people concerning how they obtain information about current events, 80 people read a newspaper each day, 90 watch news on television each day, and 30 read a newspaper and watch news on television each day. If a person is selected at random from the group surveyed, what is the (empirical) probability that the person does not read a newspaper each day?

- .68
- 170
- .24
- None of the answers given; click to see the solution.

This question refers to the data in the table below, obtained from a survey of 500 people regarding three different kinds of toothpaste.

**Prefers Brand A****Prefers Brand B****Prefers Brand C****Totals****Male**80 94 106 280 **Female**65 102 53 220 **Totals**145 196 159 500

If a person from this survey is selected at random, what is the (empirical) probability that the person prefers Brand B toothpaste?- .392
- 196
- .188
- None of the answers given; click to see the solution.

This question refers to the data in the table below, obtained from a survey of 500 people regarding three different kinds of toothpaste.

**Prefers Brand A****Prefers Brand B****Prefers Brand C****Totals****Male**80 94 106 280 **Female**65 102 53 220 **Totals**145 196 159 500

If a person from this survey is selected at random, what is the (empirical) probability that the person is a male who prefers Brand B or Brand C toothpaste?- .4
- 200
- .56
- None of the answers given; click to see the solution.

This question refers to the data in the table below, obtained from a survey of 500 people regarding three different kinds of toothpaste.

**Prefers Brand A****Prefers Brand B****Prefers Brand C****Totals****Male**80 94 106 280 **Female**65 102 53 220 **Totals**145 196 159 500

If a person from this survey is selected at random, what is the (empirical) probability that the person is a female or prefers Brand A toothpaste?- .6
- .73
- .44
- None of the answers given; click to see the solution.

A box contains 10 equally sized marbles of which 4 are red and 6 are blue. 5 marbles are selected at random from the box. What is the probability that at least one of the marbles selected is red?

- .98
- .24
- .02
- None of the answers given; click to see the solution.

If the probability of event E is 8/11, what are the odds for event E?

- 8/3
- 3/11
- 3/8
- None of the answers given; click to see the solution.

If the odds that a certain horse will win a race are 1/4 (which can also be stated as 1:4), what is the probability that the horse will win the race?

- 1/5
- 1/3
- 4/1
- None of the answers given; click to see the solution.