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In the most recent election, 20% of all eligible college students voted. If a random sample of 20 students were surveyed: Find the probability that...

In the most recent election, 20% of all eligible college students voted. If a random sample of 20 students were surveyed:
Find the probability that less than five students voted in the election.
A. 0.1746
B. 0.6296
C. 0.3704
D. 0.2182

2-. A fair die with six faces is rolled 40 times. What is the variance of the variable defined as the occurrence of an even number (2, 4 or 6)?
A. 20
B. 6
C. 10
D. 3.162

3According to a hospital administrator, historical records over the past 10 years have shown that 20% of the major surgery patients are dissatisfied with after-surgery care in the hospital. A scientific poll based on 400 hospital patients has just been conducted. What is the probability that at less than 70 patients will not be satisfied with the after-surgery care?
A. 89.44%
B. 39.44%
C. 10.56%
D. 78.88%
E. 84.49%

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In the most recent election, 20% of all eligible college students voted. If a random sample of 20 students were
surveyed:
Find the probability that less than five students voted in the election.
A....

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