1.Your department at work has 4 men and 7 women. You draw 2 names out of a hat to see who has to attend the boss's speech tonight. What is the probability that two women from your team have to go?

38%

18%

25%

29%

2.A foot race has 5 contestants. What is the probability that you guess the first and second place finishers?

7%

20%

10%

5%

You're in a room full of chests. 1/3 of the chests contain gold, the other 2/3 contain bricks. 3/4 of the chests full of gold are painted red. 1/4 of the chests full of bricks are painted red.

You grab a red chest and run. What is the probability that it contains gold?

40%

75%

60%

33%

Which of these is not a random variable?

The number of bolts in each sample.

The sample means from each sample of bolts you take.

The length of each bolt from your assembly line.

Printing errors on the 3D printer at work follow a poisson distribution. If there is on average one error every 72 hours, what is the probability that a 12 hour print will finish without errors?

.1667

.5401

.8465

.2297

We sample 100 apples and record their average mass. This sample mean is itself a random variable and has a:

binomial distribution.

Poisson distribution.

normal distribution.

Let X represent the number of traffic accidents on a stretch of highway in any 24-hour period. X is a random variable with a:

binomial distribution.

normal distribution.

Poisson distribution.