1. Answer the question, considering an event to be "unusual" if its probability is less than or equal to 0.05.

A multiple-choice question has 12 possible answers, only one of which is correct. Is it "unusual" to answer a question correctly if a random guess is made?

• Yes
• No

2.Answer the question, considering an event to be "unusual" if its probability is less than or equal to 0.05.

Assume that a study of 300 randomly selected school bus routes showed that 281 arrived on time. Is it "unusual" for a school bus to arrive late?

1. Yes
2. No

3.Determine whether the event is independent or dependent.

A red ball is drawn from a bag containing two red balls and two black balls. It is not replaced, and then a black ball is drawn from the bag.

1. Independent
2. Dependent

4.Determine whether the event is independent or dependent.

A telephone pollster has the names and telephone numbers of 50 voters, 20 of whom are registered Democrats and 30 of whom are registered, Republicans. After each call, she removes that person's name from her list. Her first two calls are to Republicans.

1. Independent
2. Dependent

5.Determine whether the event is independent or dependent.

Four successive jacks are drawn (with replacement) from a regular deck.

1. Independent
2. Dependent