Answers

You are an ecologist investigating whether there is a correlation between anchovy density estimates obtained from otter trawls and western gull abundances.  You run a regression and get a p value returned of 0.867.

Can you reject the null hypothesis?  NO

What would be the probability of committing a Type I error?  86.7%

If there really is a direct relationship between anchovy density and western gull abundances what type of error have you likely committed?  Type II

What can you do to reduce the probability of this kind of error?  Increase your sample size.

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