Gizmo warm-up
in the investigating angle theorems gizmo, you can manipulate a
dynamic figure to explore the properties of different angles.
o
1. in the gizmo, select vertical angles from the conditions menu. you
should see two intersecting lines like the ones shown to the right.
enu. you a
a. name the two pairs of angles that do not share a side. (they are nonadjacent.)
_ and
and
both pairs are vertical angles.
b. drag the points to resize the angles. what appears to always be true about the
measures of the vertical angles?
turn on show angle measures and continue to resize to check if this is always true.

Two researchers are attempting to create a new psychotherapy protocol that more reduces panic attacks. they believe that they have succeeded and are now in the clinical trial period of their protocol's development. they are working with several cohort groups, some of which have been through the new protocol, while others have done the standard protocol currently recommended. if these researchers are interested in evaluating the difference in the percentage of test subjects who successfully decreased their panic attacks in 2 months on the new protocol versus the percentage of test subjects who successfully decreased their panic attacks in 2 months with the traditional protocol, which of the following statistical tests would be most appropriate? a. analysis of variance (anova) b. correlation c. chi-square test d. paired t-test e. independent t-test