A. A sample of size 25 is used in testing the null hypothesis that μ > 50. The sample results indicate that = 48 and s = 4. Test the null hypothesis using a significance level of .05. (Be sure to show...

A. A sample of size 25 is used in testing the null hypothesis that μ > 50.  The sample results indicate that = 48 and s = 4.  Test the null hypothesis using a significance level of .05.  (Be sure to show the numeric results that lead to your decision.)

1. What does the significance level tell us?  That is, precisely what is it that has a probability of less than .05?  Be specific.