Question 11 (1 point) For a binomial probability distribution, the probability of success is 0.39. For 8 trials, what is the probability of exactly 5 successes? Round to 3 decimal places.

Your Answer: Question 11 options: Answer

Question 12 (1 point) In local elections the typical voter turnout is 18% of registered voters. If 20 registered voters are randomly selected, what is the probability that exactly 2 of them voted in a local election? Question 12 options:

0.173

0.0324

0.810

0.360

Question 13 (1 point) In local elections the typical voter turnout is 21% of registered voters. If 30 registered voters are randomly selected, what is the probability that exactly 4 of them voted in a local election? Question 13 options:

0.00194

0.116

0.840

0.240

Question 14 (1 point) Find the mean for a binomial distribution with 75 trials and a probability of success equal to 0.78. Round to one decimal place.

Your Answer: Question 14 options: Answer

Question 15 (1 point) Find the mean for a binomial distribution with 65 trials and a probability of success equal to 0.43. Round to one decimal place.

Your Answer: Question 15 options: Answer

Question 16 (1 point) Find the standard deviation for a binomial distribution with 70 trials and a probability of success equal to 0.548. Question 16 options:

4.2

17.0

17.3

4.0

Question 17 (1 point) A binomial distribution has 500 trials and a probability of success equal to 0.241. Is x=103 an significantly low number of successes.

Question 17 options:

Yes

No

There is not enough information.

Question 18 (1 point) A binomial distribution has 600 trials and a probability of success equal to 0.817. Is x=507 an significantly high number of successes.

Question 18 options:

Yes

No

There is not enough information.

Question 19 (1 point) Use the frequecy distribution to answer the question.

Data Values Frequency 3.0 - 6.9 5 7.0 - 10.9 4 11.0 - 14.9 8 15.0 - 18.9 6 19.0 - 22.9 5 What is the sample mean?

Question 19 options:

13.0

12.95

13.2

13.24

Question 20 (1 point) Use the frequency distribution to answer the question.

Data Values Frequency 1.0 - 2.9 5 3.0 - 4.9 4 5.0 - 6.9 8 7.0 - 8.9 6 9.0 - 10.9 5 What is the sample mean?

Question 20 options:

6.1

5.95

6.0

6.09