A health study tracked a group of persons for five years. At the beginning of the...

A health study tracked a group of persons for five years. At the beginning of the study, 25% were classified as heavy smokers, 35% as light smokers, and 40% as nonsmokers. Results of the study showed that light smokers were twice as likely as nonsmokers to die during the five-year study, but only half as likely as heavy smokers. A randomly selected participant from the study died over the five-year period. Compute the probability that the participant was a nonsmoker.

Solutions

Expert Solution

Answer:

Given that:

A health study tracked a group of persons for five years. At the beginning of the study, 25% were classified as heavy smokers, 35% as light smokers, and 40% as nonsmokers.

Define the following events are

H=being a heavy smoker

L= being a light smoker

N=being a non smoker

D = Death during the five year study

Also we have

Since L,N and H are exhaustive events we must have

We need

orchestra answered 11 months ago

Next > < Previous

Related Solutions

a recent study focused on the activity of elderly persons. For the age group 60-64, 1052...

a recent study focused on the activity of elderly persons. For the age group 60-64, 1052 men and 1442 women were surveyed. Of these, 436 men and 719 some stated that they excursive zero times a week. \a) is there evidence yo show a difference in the proportion of activity for the 60-64 age group by gender? b) construct a 95% confidence interval for the difference in proportion of men and women that excursive at least once a week. c)...

What five items should be tracked or monitored and calculated on the submittal log?

Question 24 For five years, P200,000 will be deposited in a fund at the beginning of...

Question 24 For five years, P200,000 will be deposited in a fund at the beginning of each six months. The money’s worth is 10.5% compounded semi-annually. How much is in the fund at the end of 4 ½ years just after the last deposit is made? P2,545,127.68 P2,745,127.68 P2,245,127.68 P2,345,127.68 Question 25 Refer to item number 24, how much is in the fund at the end of five years? P2,878,746.88 P2,278,746.88 P2,678,746.88 P2,478,746.88 Question 26 Refer to item number 24,...

For years Brian B has visited a public clinic that provides health care to uninsured persons....

For years Brian B has visited a public clinic that provides health care to uninsured persons. He has established a relationship with Dr. L, who always inquires about Brian's smoking habits and advises him to quit or at least curtail his smoking. Despite repeated warnings, Brian B has continued to smoke heavily, even after developing signs of emphysema in his early fifties. Now, at age 57, Brian B has a severe case of emphysema and goes frequently to the clinic--sometimes...

This allows transactions to be tracked between origination and financial statements: a. data control group b....

This allows transactions to be tracked between origination and financial statements: a. data control group b. financial tracing c. audit trail d. application control 16 points QUESTION 2 2. Companies promote integrity by: a. performing one or more of the authorization, custody, and recording functions b. avoiding unrealistic expectations that motivate illegal acts c. developing risk management programs involving risk d. conducting lunch and learn at outside of the office locations security testing and managerial reports are examples of:...

A study done at the Center for Disease at a certain university tracked 18,169 asymptomatic patients...

A study done at the Center for Disease at a certain university tracked 18,169 asymptomatic patients with a certain disease who started therapy at different points in the progression of the infection. It was discovered that asymptomatic patients who postponed antiretroviral treatment until their disease was more advanced faced a higher risk of dying than those who had initiated drug treatment earlier. Consider an experiment designed to determine the effectiveness of a new drug. The drug is given to participants...

As a result of federal legislation, persons who are no longer part of their group for...

As a result of federal legislation, persons who are no longer part of their group for medical insurance purposes because of being laid off or other reasons must be allowed to continue the group health insurance coverage ?for a limited period of time. ?if they are healthy. ?if their employer is willing. ?at an inexpensive price.

Discuss in a group of two persons on the following statements. ( C++ programming ) (a)...

Discuss in a group of two persons on the following statements. ( C++ programming ) (a) A compiler is the same as an interpreter. (b) We can only use high-level language and not low-level language to write a computer program. (c) Low-level language is close to machine language and high-level language is close to human language. (d) Algorithm design is not important in software development process. (e) When the computer is on, the first loading program is the Operating System.

Problem 1. In a study of the relationship between health risk and income, a large group...

Problem 1. In a study of the relationship between health risk and income, a large group of people living in MA were asked a series of questions. Some of the results are shown in the following table: Low Income Medium Income High Income Total Smoker 601 298 257 1156 Nonsmoker 2019 1601 1978 5598 Total 2620 1899 2235 6754 In this study, what is the probability that someone smokes? What is the probability that someone smokes, if they have a...

As an epidemiologist working for the World Health Organization for the past five years , Kelsey...

As an epidemiologist working for the World Health Organization for the past five years , Kelsey has lived in many parts of the world. For the past two years she served in the Emerging Disease Surveillance and Response Team stationed in Manila , Philippines About two months ago she traveled to the United States for a meeting . Over the past month , she has felt fatigued . She developed a cough that occasionally generates yellow -tinged sputum . She...

Subjects