Question 1

Use the following sample data for the following  questions. In an experiment
to study the effect of Donepezil on individuals at risk of developing Alzheimer's
disease, the following data was collected: 
-If one of the individuals is randomly selected, find the probability of getting an individual who did not progress to Alzheimer's or who took a placebo.

Accepted Answer

.969

Question 2

Select the complement of the event: All 50 participants in a study are bone marrow donors.

Accepted Answer

A)   At least one of the participants is a bone marrow donor.
B)   Less than 25 of the participants are bone marrow donors.
C)   None of the participants are bone marrow donors.
D)   More than 25 of the participants are bone marrow donors. C

Question 3

Use the following sample data for the next questions. Medical researchers, in a
three year study of Gardasil, a vaccine for the prevention of infection from four
types of Human Paplillomavirus, or HPV, on 552 women, ages 16 to 23, reported
the following data: 
-Find the odds ratio for patients who developed the HPV infection in the group given the placebo compared to group given the vaccine.

Accepted Answer

Odds ratio = 41.25

Question 4

Use the following sample data for the following  questions. In an experiment
to study the effect of Donepezil on individuals at risk of developing Alzheimer's
disease, the following data was collected: 
-If one of the individuals is randomly selected, find the probability of getting an individual who took Donepezil.

Accepted Answer

The answer of Use the following sample data for the...

Question 5

Use the following sample data for the following questions. Biologists studying
the re-vegetation of two species of succulent plants in the South African desert
examined the number of plants that survived depending on whether they were
planted in multi-species clumps or planted alone. The following data resulted:
 
-If one of the surviving succulent plants is randomly selected, find the probability of getting a surviving plant that was Species 2 or was planted alone.

Accepted Answer

The answer of Use the following sample data for the...

Question 6

Use the following sample data for the following questions. Biologists studying
the re-vegetation of two species of succulent plants in the South African desert
examined the number of plants that survived depending on whether they were
planted in multi-species clumps or planted alone. The following data resulted:
 
-If one of the surviving succulent plants is randomly selected, find the probability of getting a surviving Species 1 plant.

Accepted Answer

The answer of Use the following sample data for the...

Question 7

According to the California Department of Health Services, 83% of Californians
over 25 are not obese.
-If twenty Californians over 25 are randomly selected, what is the probability that all twenty are not obese?

Accepted Answer

The answer of According to the California Department of Health...

Question 8

Use the following information for the next questions. In a survey, the rate of
heavy smokers was reported as 270 per 1000 individuals.
-Find the probability that a randomly selected individual is a heavy smoker.

Accepted Answer

The answer of Use the following information for the next...

Question 9

Use the following information for the next questions. For 2003, the rate of
residential recycling in Delaware was reported as 130 per 1000 households.
-If two households are randomly selected, find the probability that neither of them recycled.

Accepted Answer

The answer of Use the following information for the next...

Question 10

Use the following sample data for the next questions. Medical researchers, in a
three year study of Gardasil, a vaccine for the prevention of infection from four
types of Human Paplillomavirus, or HPV, on 552 women, ages 16 to 23, reported
the following data: 
-Find the value of the absolute risk reduction for women who developed the HPV infection in the treatment and placebo groups.

Accepted Answer

The answer of Use the following sample data for the...

Question 11

Use the following information for the next questions. The project team for
restoration of a wet prairie has ten members.
-If three members are randomly selected for planting cordgrass, find the probability that the three youngest members are selected.

Accepted Answer

The answer of Use the following information for the next...

Question 12

Use the following sample data for the next questions. A study by Medtronic, a
manufacturer of a cardiac resynchronization device, on 813 patients with severe
heart failure yielded the following data: 
-Find the value of the absolute risk reduction for patients hospitalized or died in the drug therapy and the drugs with electrical cardiac device groups.

Accepted Answer

The answer of Use the following sample data for the...

Question 13

Use the following information for the next questions. The project team for
restoration of a wet prairie has ten members.
-If members are assigned to responsibilities of Project Manager, Budget Manager, and Report Manager, how many different possibilities exist?

Accepted Answer

The answer of Use the following information for the next...

Question 14

According to the Center for Disability Studies, 88.1% of people ages 16 to 64 do
not have a condition that affects their ability to work at a job or business.
-If fifteen people ages 16 to 64 are randomly selected, what is the probability that all fifteen do not have a condition that affects their ability to work at a job or business?

Accepted Answer

The answer of According to the Center for Disability Studies,...

Question 15

Select the pair of events that are dependent.

Accepted Answer

A)   Consuming a 1400 calorie hamburger each day for a week; Gaining weight
B)   Taking a Biostatistics course; Having brown hair
C)   Randomly selecting a gray fox; Randomly selecting a fish
D)   Randomly selecting someone with type O blood; Randomly selecting someone with type B blood

Question 16

Use the following sample data for the following  questions. In an experiment
to study the effect of Donepezil on individuals at risk of developing Alzheimer's
disease, the following data was collected: 
-If one of the individuals is randomly selected, find the probability of getting an individual who progressed to Alzheimer's.

Accepted Answer

The answer of Use the following sample data for the...

Question 17

Select the pair of events that are disjoint for a single trial.

Accepted Answer

A)   Randomly selecting a dentist; Randomly selecting a female doctor
B)   Randomly selecting a bird; Randomly selecting a bald eagle
C)   Randomly selecting someone taking Vitamin E; Randomly selecting someone in a control group taking no supplements
D)   Randomly selecting someone with type A blood; Randomly selecting someone with Rh negative blood

Question 18

Select the pair of events that are dependent.

Accepted Answer

A)   Consuming a 200 calorie candy bar each day for a week; Gaining weight
B)   Taking a biostatistics course; Having a drink of water
C)   Randomly selecting a red fox; Randomly selecting a bird
D)   Randomly selecting someone with type A blood; Randomly selecting someone with type O blood

Question 19

Use the following information for the next questions. In a survey, the rate of
heavy smokers was reported as 270 per 1000 individuals.
-If two individuals are randomly selected, find the probability that neither of them is a heavy smoker.

Accepted Answer

The answer of Use the following information for the next...

Question 20

In new data submitted to the FDA, Mentor, a manufacturer of silicone implants,
claimed the rupture rate for breast augmentation or cosmetic surgery, measured
by MRI scans after four years, was .5%.
-If a group of four patients are randomly selected and scanned, what is the probability that there will be at least one patient with a ruptured implant?

Accepted Answer

The answer of In new data submitted to the FDA,...

Exam 3: Probability

Select the complement of the event: All 50 participants in a study are bone marrow donors.

According to the California Department of Health Services, 83% of Californians over 25 are not obese. -If twenty Californians over 25 are randomly selected, what is the probability that all twenty are not obese?

Use the following information for the next questions. In a survey, the rate of heavy smokers was reported as 270 per 1000 individuals. -Find the probability that a randomly selected individual is a heavy smoker.

Use the following information for the next questions. For 2003, the rate of residential recycling in Delaware was reported as 130 per 1000 households. -If two households are randomly selected, find the probability that neither of them recycled.

Use the following information for the next questions. The project team for restoration of a wet prairie has ten members. -If three members are randomly selected for planting cordgrass, find the probability that the three youngest members are selected.

Use the following information for the next questions. The project team for restoration of a wet prairie has ten members. -If members are assigned to responsibilities of Project Manager, Budget Manager, and Report Manager, how many different possibilities exist?

Select the pair of events that are dependent.

Select the pair of events that are disjoint for a single trial.

Select the pair of events that are dependent.

Use the following information for the next questions. In a survey, the rate of heavy smokers was reported as 270 per 1000 individuals. -If two individuals are randomly selected, find the probability that neither of them is a heavy smoker.