Question: False positives. A rapid screening test for HIV has a false positive rate of 0.5%. This means that the probability of a false positive test

False positives. A rapid screening test for HIV has a false positive rate of 0.5%. This means that the probability of a false positive test is 0.005. If the test is used in 500 HIV-free individuals, what is the expected number of false positives in the sample? In addition, what is the probability of encountering no false positives in the sample?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Biostatistics Questions!

industrial engineering Q3 Questions Q1 25 02 /25 125 Q4 25 Question 1) (25 points) Undoubtedly, the main agendt for any rational person these days is the global pandemic. As you all know, one of the...

not cause the alarm to sound. The following table shows the results of their test. Part 1: Metal Detectors The metal detector at the entrance of a courthouse is used to detect the presence of a...

Rapid HIV tests allow for quick diagnosis without expensive laboratory equipment. However, their efficacy has been called into question. In a population of 1517 tested individuals in Uganda, 4 had...

Medical diagnostic tests have sensitivity and specificity. The sensitivity of a test for a given medical condition is the proportion of all afflicted individuals (i.e., those who have the condition)...

Part 2: Disease Detection Suppose a new rapid screening test is being developed to detect a disease. Patients who take the new test also take an older test to confirm the results. The older test is...

4.3 The following demonstrates why it is hard to screen populations for the presence of low-incidence diseases: enzyme-linked immunosorbent assay (ELISA) tests are used to screen donated blood for...

2. (5 points) Many pregnant people choose to have a screening test during the first trimester of their pregnancy to identify the probability of having an infant with down syndrome. Suppose the...

PLEASE I NEED HELP WITH THIS PROBLEM! Let's assume we know that X% of adults over the age of 60 have lung cancer, that Y% of adults who have lung cancer will test positive (called a true positive)....

QUESTION 18 An antibody test for coronavirus is available which identifies whether a person has ever had covid-19. This new test has 100% sensitivity and about 99% specificity, because it is almost...

The auditor has completed her work on the financial statements of Leslie Kwok Incorporated (LKI) for the year ended 31 December 20X7. The auditor signed her audit opinion on 5 March 20X8; LKIs Board...

What are some of the advantages of using project management software?

When analyzing the risk of a new project, what can be used to provide a fairly accurate estimate of the new project's beta? Question 6 options: 1 ) Flotation costs 2 ) Proxy betas 3 ) The component...

Solve in [0, 2). ln (cos x) = 0

In the clinical trial Melanoma Biomarker Study (NCT00348088) which is summarized at https://clinicaltrials.gov/ct2/show/nct00348088, determine (a) the actual enrollment in this observational study....

In the clinical trial Validation of PSFS in Carpal Tunnel Syndrome (NCT03909373) which is summarized at https://clinicaltrials.gov/ ct2/show/nct03909373, determine (a) the estimated enrollment in...

For the clinical trial NCT04372602 summarized at https://clinical trials.gov/ct2/show/NCT04372602, determine (a) the disease/condition being studied. (b) whether the trial is an experiment or an...

Sheridan Company provides you with the following balance sheet information as of December 31, 2022. Current assets $13,110 Current liabilities $13,680 Long-term assets 31,270 Long-term liabilities...

Current Attempt in Progress Suppose the following items were taken from the 2022 financial statements of Texas Instruments, Inc. (All dollars are in millions.) Common stock $2,630 Accumulated...

Pina Colada Corp. purchased land adjacent to its plant to improve access for trucks making deliveries. Expenditures incurred in purchasing the land were as follows: purchase price, $56,400; broker's...