Chapter 9

A table of random numbers has a
1. Normal distribution
2. Uniform distribution
3. Binomial distribution
4. Poisson distribution
A binomial distribution has
1. A variable chance of success
2. An unlimited number of trials
3. Many outcomes
4. Independence of events
The number of ways of picking 4 from 6 is
1. 15
2. 20
3. 24
4. 720
The number of ways to pick 2 from 6 is
1. 15
2. 20
3. 24
4. 720
For a binomial probability distribution with n=5 and p=0.2, the probability of 2 “successes” is:
1. 0.05792
2. 0.08
3. 0.2048
4. 0.26272
For the same distribution, the probability of less than 3 successes is:
1. 0.05792
2. 0.08
3. 0.2048
4. 0.26272
For the same distribution, the probability of more than 3 successes is:
1. 0.2048
2. 0.26272
3. 0.73728
4. 0.94208
For a poisson distribution with an average of 1`, the probability of zero successes is:
1. 0.2642
2. 0.3679
3. 0.6321
4. 0.7358
For the same distribution, the probability of more than 1 is:
1. 0.2642
2. 0.3679
3. 0.6321
4. 0.7358
For a poisson distribution, the mean is:
1. n
2. np
3. npq
4. √npq