please assist - need to figure out how to start these

Question 11 (1 point) For a binomial probability distribution, the probability of success is 0.52. For 7 trials, what is the probability of exactly 4 successes? Round to 3 decimal places.

Question 12 (1 point) In local elections the typical voter turnout is 17% of registered voters. If 20 registered voters are randomly selected, what is the probability that exactly 3 of them voted in a local election? Question 12 options:

0.614

0.00491

0.236

0.510

Question 13 (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 13 options:

0.360

0.810

0.173

0.0324

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.

Question 15 (1 point) Find the mean for a binomial distribution with 55 trials and a probability of success equal to 0.43. Round to one decimal place.

Question 16 (1 point) Find the standard deviation for a binomial distribution with 90 trials and a probability of success equal to 0.705. Question 16 options:

18.7

4.3

19.0

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 800 trials and a probability of success equal to 0.354. Is x=258 an significantly low 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 2.0 - 4.9 5 5.0 - 7.9 4 8.0 - 10.9 8 11.0 - 13.9 6 14.0 - 16.9 5 What is the sample standard deviation?

Question 19 options:

4.1

4.08

4.7

4.74

Question 20 (1 point) A parking lot has 32 trucks, 44 cars, and 10 motorcycles. If a vehicle is randomly chosen, what is the probability that it is car?

Round your answer to 3 decimal places.

Your Answer: Question 20 options: Answer