Show that secant is an even function

Statistics First we did a warmup in class: A 90% confidence interval is an interval estimate for a ________ using a procedure which will capture the parameter 95% of the time. HYPOTHESIS TEST -We are seeing if our data is strong enough to rule out chance -To first setup a hypothesis test you should have a: Null Hypothesis: Ho =Both are about the population Alternative Hypothesis: Ha *Logic: We give Ho the benefit of the doubt to see if our results could have happened by chance. (This is like in a court case: INNOCENT UNTIL PROVEN GUILTY) example: We are going to test if more than 15% of Ithaca College students drank coffee today. So……