Compute expected number of tests necessary for each group

Reference no: EM13195383

To determine whether or not they have a certain desease, 100 people are to have their blood tested. However, rather than testing each individual separately, it has been decided first to group the people in groups of 10. The blood samples of the 10 people in each group will be pooled and analized together. If the test is negative. one test will suffice for the 10 people (we are assuming that the pooled test will be positive if and only if at least one person in the pool has the desease); whereas, if the test is positive each of the 10 people will also be individually tested and, in all, 11 tests will be made on this group. Assume the probability that a person has the desease is 0.04 for all people, independently of each other, and compute the expected number of tests necessary for each group.

Reference no: EM13195383

Questions Cloud

Find distance traveled by the prey from the time : Let D be the distance traveled by the prey from the time it is dropped until the time it hits the ground.

Find in both prokaryotic and eukaryotic cell : which of the following would one expect to find in both prokaryotic and eukaryotic cell

State the pressure in atmospheres of a sample of gas : What is the pressure (in atmospheres) of a sample of gas trapped in the closed-tube mercury manometer

Construct a tree diagram to represent this situation : A mini license plate for a toy car must consist of a number followed by two letters. Each letter must be a C, A or R. Each number must be a 3 or 7. Repetition of letters is permitted.

Compute expected number of tests necessary for each group : Assume the probability that a person has the desease is 0.04 for all people, independently of each other, and compute the expected number of tests necessary for each group.

Explain chief use is in the manufacture of nylon : Adipic acid, HOOC(CH2)4COOH, is among the top 50 manufactured chemicals in the United States (nearly 1 million metric tons annually). Its chief use is in the manufacture of nylon. It is a diprotic acid having Ka1=3.9×10?5 and Ka2=3.9×10?6.

How much volume is added to a spherical balloon : arest tenth of a cubic inch, how much volume is added to a spherical balloon whose radius grows from 10 to 20 inches long?

What is the probability that two are women : Three hundred people apply for three jobs. 90 of the applicants are women.

State what volume of the stock solution would contain : What volume of the stock solution (Part A) would contain the number of moles present in the diluted solution (Part B)? but I cant get this one right can someome please help.

User Account

All Pages