Determine whether or not people have a certain desease

Assignment Help Basic Statistics
Reference no: EM13141630

To determine whether or not they have a certain desease, 80 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 0.05 for all people, independently of each other, and compute the expected number of tests necessary for each group.

Reference no: EM13141630

Questions Cloud

Discuss advantage and disadvantage of aerobic respiration : Discuss the advantages and disadvantages of aerobic respiration, anaerobic respiration, and fermentation.
The advantages and disadvantages of cloning. : Write an essay in the Advantages and Disadvantages of cloning. 300 word limit include reference
What types of data prompted kimura to develop neutral theory : What types of data prompted Kimura to develop the neutral theory to explain the amount of genetic variation in populations in the late 1960s? How does the neutral theory differ from classical models developed in the 1920s and 1930s?
Total amount to be budgeted in pounds for direct materials : Sudler has 2,600 pounds of clay mix in beginning inventory and wants to have 3,000 pounds in ending inventory. What is the total amount to be budgeted in pounds for direct materials to be purchased for the month?
Determine whether or not people have a certain desease : To determine whether or not they have a certain desease, 80 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.
Explain current and average power delivered to the load : Current and average power delivered to the load, A load has a 20 ohm resistor and a 4 henry inductor connected in series. It is connected to a power source with v(t)= 100cos50t
What percentage of women would be expected to heterozygous : About 8% of the men in a population are red-green color blind (because of a sex linked recessive allele). Answer the following questions, assuming random mating in the population, with respect to color blindness.
Competing visions the federalists and republicans : Characterize the competing visions the Federalists and republicans had for the country during the 1790s.
What is the current value of the future payments : Mrs. Crawford will receive $6,500 a year for the next 14 years from her trust. If an 8 percent interest rate is applied, what is the current value of the future payments?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Mean of the sampling distribution of ?-hat

Suppose n = 1000 persons are to be sampled from this population and the sample proportion of married persons (ρ-hat) is to be calculated. What is the mean of the sampling distribution of ρ-hat?

  Mean aptitude test score

Find the probability that the mean aptitude test score for a randomly selected group of 150 8th graders is between 98 and 102.

  Explain conclusion-no statistically significant differences

Explain the conclusion that there were no statistically significant differences (p ≥ 0.05) between the benefits of behavioral therapy and psychoanalysis when treating an eating disorder.

  Chance variation-simple random sample of students

Last year, there were 30,000 students at a university; their GPA had a mean of 2.9 and an SD of 0.6. This year, in a simple random sample of 100 students taken from this university, the GPAs have a mean of 2.95 and an SD of 0.55. Has the mean GPA ..

  Create confidence intervals for population variance

Assume the sample is taken from a normally distributed population. Construct 98% confidence intervals for (a) the population variance o2 and (b) the population standard deviation.

  Paired t-test example for statistics students

Community policing strategies have been useful in some jurisdictions to reduce crime. As Police Captain, you wish to run an experiment to see whether it will work in your city.

  Standard deviation of the purchase amount

A large retail corporation plans to sample sales receipts of its meat department to estimate the average size (in dollars) of a customer purchase. Previous analysis suggest that the standard deviation of the purchase amount is approximately $50.72..

  Consists of personal interviews with participants

For a study that consists of personal interviews with participants (rather than mail or phone surveys), explain why simple random sampling might be less practical than some other sampling methods.

  Proportion of exams of type

If the class does well on an exam, then the next exam is equally likely to be any of the three types. If the class does badly, then the next exam is always type 1. What proportion of exams are type 1, 2, and 3?

  Weighted mean profit per delivery for bottling company

What is the weighted mean profit per delivery - a bottling company offers three kinds of delivery service - instant, same day and within 5 days.

  Linear regression-forecasting future conditions

Most businesses use some form of linear regression in forecasting future conditions. Give an example of the use of regression analysis at your organization. What were the independent and dependent variables?

  How large a sample to take to compute true proportion

How large a sample must one take to be 90% confident that the estimate is within 0.05 of the true proportion of women over 55 who are widows?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd