I stated the hypotheses for the snake example as:
*H*_{0} :µ=6.0 days
*H*_{1}:µ≠6.0 days

Where m = the mean number of days to catch a loose snake in a home.

Let’s say that I know that the standard deviation of the population, σ, is 0.5 days, and my sample size to test the hypothesis, *n,* is 30 homes. (Please don’t ask me how I’m going to find 30 homes with loose snakes. I’m making this up as I go along, so just humor me.) We’ll also set α = 0.05, which means I’m willing to accept a 5 percent chance of committing a Type I error. Our first step is to calculate the standard error of the mean, σ _{x} . If you remember from Chapter 13, the equation is:

Let’s assume the sample mean from the 30 homes is 6.1 ...

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