According to the research methodology, a set of observation leads to the formulation of a hypothesis. However, a hypothesis can be formulated through literature research or by looking into real world's problems. The hypothesis is then tested using a strict research criteria, and if proven, it becomes a theory.
In this case, a researcher made a <u>hypothesis that people who exercise will do better on a specific test as compared to the people who don't exercise</u>. This hypothesis is based on his literature review and should be tested. There are no conditions given for the test, nevertheless, it doesn't provide enough information to be called as a theory or scientific law.
So for a 50-year-old, maximum heart rate is 220 minus 50, or 170 beats per minute.At a 50 percent exertion level, your target would be 50 percent of that maximum, or 85 beats per minute.
Answer: It would be the last option, the essential amino acid content. Determining the quality of a protein is determined by assessing its essential amino acid composition, digestibility and bioavailability of amino acids
