this question is incomplete but I have added The Answer options to your question
a) He does not have a hypothesis.
b) He only has one group. He has not established a comparison
c) He has not measured an outcome.
d) The groups were not equal to begin with.
Answer:
b) He only has one group. He has not established a comparison
Explanation:
A randomized controlled experiment can be defined as an experiment that has two groups which it randomly assigns participants to.
These two groups are:
1.) the experimental group and
2.) The controlled group on whom the study is being performed.
Now Alberti does not have any of these groups we have listed. He performed the testing on the same people before they consumed alcohol and after they consumed alcohol. Therefore this study was not comparative in nature.
Answer:
Yes. Because training improves the resistance.
Explanation:
The volume of air (in liters) that can be drawn from the fully inflated lungs is called forced vital capacity (FVC); also the most important measure of air flow is the forced expiratory volume in the first second (FEV1), this is the amount of air that an individual can draw a second after starting exhalation taking the Fully inflated lungs and doing their best.
Training improves the resistance and strength of the respiratory muscles in athletes, reduces the resistance of the respiratory channels, increases lung elasticity and alveolar expansion as seen in studies where there is an expansion of lung capacities and volumes. This improvement can be quantified by spirometry.
Correct me if im wrong about this but im going with the letter D
Hello!
I believe the answer is C)a body mass index (BMI) that exceeds the typical BMI for his or her body composition
I hope it helped!
the important factor in determining the start of a friendship faith and trust