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Math Help - Maths hypothesis and investigation

  1. #1
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    Feb 2007
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    Wink Maths hypothesis and investigation

    Hi

    I need some help on my homework which i am finding difficulty of doing. The question is

    Q1. Not everyone has the same pulse rate - and pulse rate can be affected by a number of things.

    Write a hypothesis about how someone's pulse rate can be affected
    Design and carry out an investigation to show different ways in which pulse rate can be affected.

    I appreciate the help you will provide

    Thank you
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  2. #2
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    Nov 2006
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    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)

    __________________________________________________ _____________

    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.
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