Find the indicated probability.

1). A sample of 100 wood and 100 graphite tennis rackets are taken from the warehouse. If 6 wood and 18 graphite are defective and one racket is randomly selected from the sample, find the probability that the racket is wood or defective.

2). Find the probability of correctly answering the first 3 questions on a multiple-choice test if random guesses are made and each question has 4 possible answers.

Solve the problem.

3). Approximately 68% of Chemistry students do their homework independently and on time? In a chemistry class of 48 students, what is the probability that 30 students do their homework on time? State your answer to four decimal places.

State the sample space of possible outcomes for given problem.

4). Flip a coin four times.

Use the given date to construct a frequency table.

5). A medical research team studied the ages of patients who had strokes caused by stress. The ages of 34 patients who suffered stress strokes were as follows.

29, 30, 36, 41, 45, 50, 57, 61, 28, 50, 36, 58, 60, 38, 36, 47, 40, 32, 58, 46, 61, 40, 55, 32, 61, 56, 45, 46, 62, 36, 38, 40, 50, 27

Construct a frequency table for these ages. Use 6 classes beginning with a lower class limit of 27.

Age	Frequency

Solve the problem. Round results to the nearest hundredth.

6). The mean of a set of data is 4.59 and its standard. deviation is 2.12. Find the z score for the value of 11.29.

A). 3.46 B). 3.48 C). 3.16 D). 2.84