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
Otrada [13]
2 years ago
6

As part of a larger study of the effects of amphetamines, a pharmacologist wished to investigate the claim that amphetamines red

uce overall water consumption. She injected 25 standard lab rats with an appropriate dose of amphetamine and 30 with a saline solution as controls. Over the next 24 hours she measured the amount of water consumed by each rat and expressed the results in ml/kg body weight:
saline amphetamine
n 9 16
X 134.1 112
s 16 35.6
Does the amphetamine significantly suppress water consumption? What is the null hypothesis?
a. x-saline = X-amphetamine
b. mu-saline = mu-amphetamine
c. x-saline < X-amphetamine
d. mu-saline
Biology
1 answer:
oksian1 [2.3K]2 years ago
3 0
I think it is A
Hope my answer help you?
Have
You might be interested in
Prior to the invention of refrigeration, meat was often preserved by soaking it in brine (a solution of water with a high concen
Anon25 [30]
Water would move out of the cells of the microorganisms by osmosis and the cytoplasm would become dehydrated, killing the cells.
The brine is a hypertonic solution, thereby "pulling" the water out of the bacterial cells.
4 0
3 years ago
Read 2 more answers
Diagram for female reproductive system​
Ede4ka [16]

<h2> hope it helps.</h2><h2>stay safe healthy and happy.</h2>

6 0
3 years ago
Read 2 more answers
This cell would be in a (blank) solution
Natali5045456 [20]

Answer:

hey you didn't provide the complete question. what's the full question maybe I could help

7 0
3 years ago
After people have been drinking
labwork [276]
What were the people drinking?
7 0
2 years ago
Bt corn is a genetically modified crop that contains a gene from another species
Varvara68 [4.7K]
<h2>Answer:</h2>

Bt corn is a genetically modified organism that contains a gene of bacteria known as Bacillus thuringiensis.

<h3>Explanation:</h3>
  • Bt corn is a type of transgenic crop that contains a gene which produces a crystal-like protein which has an insecticidal effect.
  • This gene is present in bacteria. This gene is transferred to the plant by the recombinant DNA technology and genetic engineering.
  • This bacterium is a soil bacterium which has no side effects on humans.
  • Due to use of this technology, the poisonous chemical insecticides are not used in crop production.
5 0
3 years ago
Other questions:
  • The rate of firing of the postsynaptic neuron depends on the amount of ______ input it receives from the presynaptic neuron.
    8·1 answer
  • How is a tissue different from an organ? How are they similar?
    10·1 answer
  • 1.
    7·1 answer
  • when you take the exit ramp ooff the expressway and merge onto the next road, you see yellow lines dividing the roadway. what do
    13·2 answers
  • Which B.F. Skinner invention allowed him to train subjects through operant conditioning?
    7·2 answers
  • What are three important functions of a cell membrane?​
    14·1 answer
  • A scientist is examining the role of an element found in fats and carbohydrates of living things. This element makes up 65% of h
    11·2 answers
  • The graph shows the size of two populations of the same species over time.
    13·2 answers
  • The cytolysis of red blood cells is specifically called
    11·1 answer
  • b. Describe how an effort to preserve a species of elephant could affect an area where elephants have been hunted extensively. (
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!