A hypothesis consists either of a suggested explanation for a phenomenon or of a reasoned proposal suggesting a possible correlation between multiple phenomena.

So im NOT sure what kind of answer you are looking for but this might help.

You are testing to see how peoples pulse rates are affected by different methods. These methods could be things like

- aerobic excercies (running, swimming, football etc)

- anaerobic excercise (weightlifting, athletics etc)

- no excercies (reading, conversation, sitting at the computer, doing math)

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Anyway to make this experiment this is what i would do

1. You need to define a null hypothesis. This is the hypothesis that is presumed true until evidence indicates otherwise. So our null hypothesis is that the method chosen (running, swimming etc) does not affect the pulse rate (i.e the method does not cause a change from the resting pulse rate). This is the hypothesis about how someone's pulse rate can be affected.

2. Then measure the resting pulse rate of 10 individuals. This their pulse rate under the null hypothesis.

3. once we have defined the null hypothesis, we carry out experiments. For the 10 individuals. we make them do a seires of experiments e,g

experiment 1: run 400meters

experiment 2: read a book

experiment 3: swim 4 lengths

for each of these experiments we measure the pulse rate of the 10 individuals.

4. We then compare the pulse rates from these experiments to that from our null hypothesis. Remember our null hypothesis is that the experiment does not affect the pulse rate.

if experiment 1 and 3 made the pulse rate increase, we would reject the null hypothesis, as they affected the pulse rate.

in experiemnt 2 the pulse rate remained the same so we would accept the null hypothesis.