1.The probability of hurricane striking a particular region in any one year is 0.05. if a person takes a 25-year mortgage on a recent purchase property in the region. What is the probability that the owner will experience at least one hurricane during the mortgage period?

Select one:

a.1.25

b.0.75

c.0.52

d.0.48

2.One piece of equipment requires 8 batteries that must operate for more than 2 hours. The batteries being used have a 15 percent chance of failing within 2 hours. The exploration leader plans to take 10 batteries. The probability that the supply of batteries will contain enough good ones to operate the equipment is ____.

Select one:

a.0.9832

b.0.9964

c.0.0132

d.0.8202

3.One piece of equipment requires 8 batteries that must operate for more than 2 hours. The batteries being used have a 15 percent chance of failing within 2 hours. The exploration leader plans to take 10 batteries. The probability that the supply of batteries will not contain enough good ones to operate the equipment is _____.

Select one:

a.0.1798

b.0.0168

c.0.0449

d.0.9832

4.Previous research shows that 60 percent of adults who drink non-diet cola prefer Coca-Cola to Pepsi. Recently, an independent research firm questioned a random sample of 5 adult non-diet cola drinkers. That chance that 2 or more of these people will prefer Coca-Cola is ____.

Select one:

a.0.0199

b.0.9130

c.essentially zero

d.0.0293

5.The manager at a local movie theater has collected data for a long period of time and has concluded that the revenue from concession sales during the first show each evening is normally distributed with a mean equal to $336.25 and a standard deviation equal to $80. Based on this information, what are the chances that the revenue on the first show will be between $300 and $372?

Select one:

a.0.1736

b.0.3473

c.0.6534

d.0.3062

6.A health company claims that only 5 percent of patients experience dizzy when they take a particular drug. In a research study, n = 80 patients were given this drug and 8 experienced dizzy. Assuming that the company's claim is true, what is the probability of 8 or more patients experiencing dizzy?

Select one:

a.0.0375

b.0.9162

c.0.0838

d.0.4162

7.The human resources department has determined that the amount of unused sick time for individual employees is normally distributed with a mean of 60 minutes and standard deviation of 40 minutes. Based on this information, what is the probability that an employee will have less than 20 minutes of unused sick time?

Select one:

a.0.1587

b.0.8413

c.0.0421

d.0.3413

8.Which of the following statements is true?

Select one:

a.A binomial distribution with n = 6 and p = 0.50 will be symmetric

b.A binomial distribution with n = 20 and p = 0.05 will be left-skewed

c.A binomial distribution with n = 20 and p = 0.05 has an expected value equal to 2

d.A, B, and C are all true