A nonprofit agency does cold calls to raise funds.They have determined that they have a 0.22 probability of success on any given cold call. Jill has 20 calls scheduled for today.

1)What is the probability that Jill will have exactly 5 successful calls?

A.0.7343

B.0.2657

C.0.8077

D.0.1923

2)What is the probability Jill will have more than 6 successful calls?

A.0.1301

B.0.1356

C.0.3026

D.0.8699

3)What is the probability Jill will have less than 4 successful calls?

A.0.5420

B.0.2130

C.0.3289

D.0.1777

4)The expected number of successful calls would be 4.4.What is the standard deviation?

A.2.10

B.1.85

C.1.34

D.3.43