1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Musya8 [376]
3 years ago
9

A screening test is used in the same way in two similar populations, but the proportion of false-positive results among those wh

o test positive in population a is higher than that among those who test positive in population
b. what is the likely explanation for this finding?
Biology
1 answer:
Llana [10]3 years ago
5 0
The great/best answer is d. By definition the proportion of false-positive results among those who test positive is 1 minus the positive predictive value. If this number is lower in population A, then population A has a higher positive predictive value. As the disease prevalence increases, the positive predictive value increases. Population A has a higher positive predictive value; therefore, the disease must be more prevalent in population A.
<span>Answer a is not correct since adequate information is provided to infer the explanation for the finding. Answers b and e are incorrect since specificity is a characteristic of a test and does not change when the test is applied to different populations with varying disease prevalence. Answer c is incorrect since the prevalence of disease must be higher in population A as the positive predictive value is higher in population A</span>
You might be interested in
Two heterozygous purple-stemmed plants are grown. Each parent has the genotype ANL/anl. Pollen from one of the plants is used to
patriot [66]

Answer:

A. All of the offspring plants will have purple stems.

Explanation:

All of the offspring plants will have purple stems because both the parents have the same stem color i. e. purple so if they mate with each other , the offspring produce have the same color of stem. Both parents plants are heterozygous which means that they are different from one another in some characteristics but also some similarities such as stem color etc. So all the offspring produce have purple-stemmed.

7 0
3 years ago
Read 2 more answers
**HELP NOW**Which best explains why the siblings look more like each other and less like their grandparents?
Oxana [17]
Because the share the characteristic from there parent's
5 0
3 years ago
Read 2 more answers
Compare surface, subsurface, and placer mining in terms of damage to the environment.
vfiekz [6]
Surface mining, which is also known as strip mining, is when soil and rock overlaying mineral deposit is removed. It can cause habitat destruction, air pollution from dust particles, soil erosion and pollution. Subsurface mining is removing deposits from the Earth by drilling underneath layers of rock and dirt. To keep the pathways clear, <span>mining companies have to pump out large amounts of water, which go into surface ecosystems. That disrupts the ecosystem by changing the pH conditions of soil and water sources. Placer mining is mining of stream bed deposits for minerals, a way of obtaining minerals and metal resources. Although, because it is small, causes less damage to the surrounding environment it still can disrupt river ecosystems with pollution and sediments. 
 

I hope this helps!!

</span>
5 0
3 years ago
Read 2 more answers
Describe the movement of particles within solids, liquids, and gases.
Paladinen [302]
Particles in solids move ever so slightly. They are not completely at rest, but since they are so packed together it’s difficult for them to move. That’s what makes a solid a solid. Particles in liquids slide and move past each other fairly quickly, and have space to move. Particles in gases are the most spread apart, and because of this, they move the quickest. Hope this helped.
8 0
3 years ago
BRAINLIEST 20 POINTS ANSWER THESE QUESTIONS
yarga [219]
1. An underdeveloped DNA molecule would result in mutations. On the genetic level, this could mean entire traits are deleted or that an early stop occurs in transcription, which could cut off parts of instructions.

2. Genetic code is the nucleotide sequence of a gene while the gene expression is how these sequences are used to make functioning amino acids and proteins to create DNA.

3. In each cell itself there are roughly 42 million proteins.
4 0
3 years ago
Other questions:
  • WILLL GIVE A BRAINLEST
    11·2 answers
  • Every morning, a client with type 1 diabetes receives 15 units of humulin 70/30. what does this type of insulin contain?
    8·1 answer
  • How is the diagnosis process similar to the scientific process ?
    9·2 answers
  • Plate movement can be seen at ____
    15·2 answers
  • Glucose provides energy for cells. Different cells have different mechanisms for glucose intake. Intestinal cells contain protei
    15·1 answer
  • Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. One diet is a meat-based fish
    5·1 answer
  • What functions do the rotifer's cilia perform?
    9·1 answer
  • Can you determine the relationship between the risk of contracting Lyme disease and the concentration of ticks that act as vecto
    11·1 answer
  • Prokaryotic cells lack which of the following?
    14·2 answers
  • Which cells can form ATP by breaking down glucose?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!