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
spayn [35]
3 years ago
10

Researchers want to know if the concentration of ammonia in the James River is above the safe level for consumption. They take s

amples and develop a data set. Their null hypothesis is that the sample mean is > 6(unsafe) and their alternative hypothesis is that the sample mean is < 6. Which of the following should they use in testing their hypothesis?
A) a one-tailed test
B) a two-tailed test
Biology
1 answer:
jekas [21]3 years ago
4 0

Answer:

A- A one-tailed test

Explanation:

A one-tailed test is a statistical test that shows the sample mean would either be higher or lower than the population mean. It creates a relationship in a single direction such that the critical area is either greater or less than a stated value but not both. In a one-tailed test, null and alternative hypothesis have to be stated as if the tested sample is in a one-sided critical area, the alternative hypothesis is accepted.

In this scenario, the researchers' hypothesis take either   > 6 or < 6 as the stated value. The result can only go in either of both direction, not both.

You might be interested in
What inferences can you make regarding the pH of a particular part of the digestive system and the type and relative size of the
djverab [1.8K]
The pH of the stomach in the digestive system is known to be very low, and acidic, so it can break the bonds between molecules, to which the nutrients diffuse into your blood, energizing you.
3 0
3 years ago
Why are food preservatives add
irina [24]
To preserve and keep them fresh
3 0
3 years ago
Read 2 more answers
3 processes of the water cycle<br><br><br>please i really need help this is due on jan 23!!!!! ​
netineya [11]

Answer:

Of the many processes involved in the water cycle, the most important are evaporation, transpiration, condensation, precipitation

Explanation:

8 0
3 years ago
Which features are critical for surival of bacteria cell?
LuckyWell [14K]

Answer:

A host

Explanation:

4 0
2 years ago
4
Sonbull [250]

Answer:

All choices are correct

Explanation:

The most well known was a botanist who studies plants too realized that plats,living things are made of cells so most likely the answer would be all living things are made of cells

I hope this helps, I am only in the 7th grade and this was pretty easy to me

5 0
3 years ago
Other questions:
  • Give two examples from the transformation of kinetic energy to potential one and vice versa
    11·2 answers
  • What term refers to polluted sites that can be cleaned and revamped?
    6·2 answers
  • What kind of mathematics do scientists use to analyze data
    6·2 answers
  • An important similarity between photosynthesis and cellular respiration is that both processes
    12·1 answer
  • Las 4 partes externas del riñon cuales son Plisssss
    11·2 answers
  • Im not sure which is the answer
    15·1 answer
  • 1. The carrying capacity for a population of deer in a forest is 300 individuals.
    7·1 answer
  • Hemophilia is inherited in humans as an X-linked recessive condition. A phenotypically normal woman whose father was hemophiliac
    13·1 answer
  • What food contains no lipids, nucleic acids, carbonhydrates, or proteibs?
    5·2 answers
  • 1.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!