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9 December, 09:56

Why do we find probability of deviation in biology? And when can the null hypothesis be accepted

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  1. 9 December, 10:05
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    Answer: probability is used to predict the chance that an event is likely to occur at a particular chosen level of significance.

    Null hypothesis is accepted in biology when the p value is less than 1%, statistically, when the value of p<0.01

    Explanation:

    Determing the significance level is decided by the researcher, often times, scientists commonly use the 0.05, 0.01, or 0.001 probability levels as cut-off values. For instance, in the example experiment, you used the 1% probability. Thus, P ≥ 0.01 can be interpreted to mean that chance likely caused the deviation between the observed and the expected values (i. e. there is a greater than 1% probability that chance explains the data).

    If instead we had observed that P ≤ 0.01, this would mean that there is less than a 1% probability that our data can be explained by chance. There is a significant difference between our expected and observed results, so the deviation must be caused by something other than chance.
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