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Math Help - determining hypothesis

  1. #1
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    determining hypothesis

    A study was done where 54 potatoes where injected with bacteria that causes rot. The amounts injected were categorized as 1=low 2=medium and 3=high. After 5 days the diameter of the rotted portion on each potato was measured. What are the hypotheses being tested? Is it H_o: the portion of rot in a potato is proportional to the amount of initial bacteria in the potato[/tex] and H_a: the portion of rot in a potato is not proportional to the amount of initial bacteria in the potato[/tex]
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  2. #2
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    Null Hypothesis is Status Quo. If it's the choice that causes you to do nothing, or to take no action, that is the Null Hypothesis.

    Looks to me like you have it backwards.

    "Not Proportional" is a little too strong. "No Difference" is the place to start. You can prove your theories after you prove that your theories have any credibility at all.
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