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
Afina-wow [57]
3 years ago
7

The grades of a science test are normally distributed. Thanh finds that his grade on the test has a z-score of –2.5. Which of th

e following statements must be true?
A. Thanh’s grade is 2.5 standard deviations below the mean of the test grades.

B. Thanh’s grade is 2.5 points below the mean of the test grades.

C. Thanh’s grade is 2.5 standard deviations above the mean of the test grades.

D. Thanh’s grade is 2.5 points above the mean of the test grades.
Biology
2 answers:
nasty-shy [4]3 years ago
6 0
From all those aforementioned, the true statement is: Thanh’s grade is 2.5 standard deviations below the mean of the test grades. The answer to your question is A. I hope this is the answer that you are looking for and it comes to your help.
Tom [10]3 years ago
3 0

The right answer is Thanh's grade is 2.5 standard deviations below the mean of the test grades.

The z scores are standard deviations. If, for example, a tool returns a z score of +2.5, it means that the result is a standard deviation of 2.5.

Very high or very low (negative) z scores associated with very low p values are at the ends of the normal distribution.

You might be interested in
Bearing fruit benefits plants because
Pavlova-9 [17]

Answer:

There are many benefits of bearing fruits. Please read the explanation section.

Explanation:

A fruit is the part of flowering plants. Fruit contains the seeds of the plant. These seeds help the plants to reproduce its next generation. Some fruits are fleshy like berries; some are hard like nuts. The fruit helps to protect the seeds.

Along with this, the fruit helps the seeds to be spread out. Many fruits are attractive because of their color and aroma. They attract small animals like birds, squirrels. They eat those fruits. After eating, the animals move from one place to another. With them, the seeds move too.  When those animals poop, the seeds are coming out with their poop. Then the seed can grow at that place.

4 0
4 years ago
Which is NOT a way carbon gets released into the ocean?
Nadusha1986 [10]
The answer to this question is B.


5 0
4 years ago
Read 2 more answers
the ice caps in the antarctic and the arctic are a part of the geosphere, cryosphere, or the biosphere?
lora16 [44]
Crypsphere is the frozen water part of the earth system
7 0
3 years ago
Read 2 more answers
Magnets will stick to refrigerator doors because the doors are
timofeeve [1]

Answer:

A) Made Of Metal

Explanation:

It is a well known fact that magnets stick only to metal and the opposite side of another magnet.

5 0
3 years ago
Read 2 more answers
Patterns of life Questions please help
vlada-n [284]

Im not knowing of this subject but i'm sure your answer is C.) Patterns

I really hope this helps. Have a nice day.

8 0
3 years ago
Other questions:
  • How to explain the three main parts of plants and animals
    12·1 answer
  • The diagram shows the leg bones of a (Left -> Right): Orangutan, dog, pig, cow, tapir, and horse. Most of the animals have th
    14·2 answers
  • Describe two biologically important features of diffusion
    7·1 answer
  • Jonathan sows some pea seeds in one pot within few days the seeds germinate and a radicle forms which gives rise to roots how do
    13·1 answer
  • Compare/contrast independent and dependent variables.
    11·1 answer
  • Question 18
    6·2 answers
  • how does the word "haploid" apply to the gametes formed during meiosis. Why is it important that gametes are haploid instead of
    7·1 answer
  • Which of the following is not made of cell(s)? Bacteria, virus, protist, fungi, animals?
    5·1 answer
  • Which of these statements about nucleosomes are correct?
    9·1 answer
  • We are reacting two molecules of nitrogen gas with six molecules of hydrogen gas to form ammonia, nh3
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!