The Canadian Lung Association reports that 20% of Canadian teens (aged 12-19) currently smoke(daily or occasionally). In a random sample of seven Canadian teems, find the probability that at least two smoke.

Group of answer choices

0.4332

0.3423

0.4323

0.4233

The Canadian Lung Association reports that 20% of Canadian teens (aged 12-19) currently smoke(daily or occasionally). In a random sample of seven Canadian teems, find the probability that at most two smoke.

Group of answer choices

0.8025

0.8205

0.8250

0.8520

The Canadian Lung Association reports that 20% of Canadian teens (aged 12-19) currently smoke(daily or occasionally). In a random sample of seven Canadian teems, find the probability that between one and three, inclusive, smoke.

Group of answer choices

0.7695

0.7569

0.7965

0.7956

Suppose 15% of the trees in a forest have sever leaf damage from air pollution. If 5 trees are selected at random, find the probability that at most two have sever leaf damage.

Group of answer choices

0.7934

0.9347

0.9374

0.9734

The average Canadian teen views 14.1 hours of TV per week, with approximately 8% of the week devoted to TV. If 1000 Canadian teens are randomly selected, find the mean and standard deviation of the number of teens who watch TV each week.

Group of answer choices

mean = 80; standard deviation = 8.579

mean = 82; standard deviation = 12.756

mean = 920; standard deviation = 8.579

mean = 80; standard deviation = 73.6

Suppose that, for a particular type of cancer, chemotherapy provides a 5-year survival rate of 80% if the disease could be detected at an early stage. Among 18 patients diagnosed to have this form of cancer at an early stage who are just starting the chemotherapy, find the probability that six will die within 5 years.

Group of answer choices

0.01865

0.08516

0.08615

0.08165

In a 400-page manuscript, there are 100 random misprints. Assume that these misprints are distributed following Poisson distribution. If a page is selected, find the probability that it has no misprints.

Group of answer choices

0.8778

0.7878

0.7788

0.7887

In a 400-page manuscript, there are 100 random misprints. Assume that these misprints are distributed following Poisson distribution. How many pages in the manuscript are there with one misprint?

Group of answer choices

82 pages

78 pages

76 pages

80 pages

In a 400-page manuscript, there are 100 random misprints. Assume that these misprints are distributed following Poisson distribution. If two pages are selected, find the probability that they have one misprint.

Group of answer choices

None of the given numbers

0.3033

0.3303

0.3330

In a 400-page manuscript, there are 100 random misprints. Assume that these misprints are distributed following Poisson distribution. If four pages are selected, find the probability that they have at least 1 misprints.

Group of answer choices

0.3621

0.6321

0.6312

0.6132