Question

Hypothesis A: If heart rate is related to caffeine intake, then coffee drinkers will have higher heart rates.
Hypothesis B: If a higher heart rate is related to caffeine intake, then the heart rate of most people will be higher 30 minutes after they drink a cup of coffee.

Which hypothesis is more useful and why?


A. The two hypotheses are equally useful.
B. Hypothesis A is more useful because it’s true.
C. Neither hypothesis is useful because they aren’t testable.
D. Hypothesis B is more useful because it suggests a way to test the relationship between heart rate and caffeine intake.

Answer 1

Hypotheses B is more useful because it suggests a way to test the relationship between heart rate and caffeine intake.

Answer 2

Answer: D. Hypothesis B is more useful because it suggests a way to test the relationship between heart rate and caffeine intake.

Hypothesis A and B both are suggesting that caffeine intake is related to higher heart rate. But hypothesis B is proving it more certainly by suggesting the affects of caffeine intake on heart rate. As, heart rate of most people will be higher 30 minutes after they drink a cup of coffee is testifying the fact, that higher heart rate is related with caffeine intake.

Therefore, hypothesis B is more useful because it suggests a way to test the relationship between heart rate and caffeine intake.