The function f(t) = 1.875t + 15 models the population, in thousands, of Waterville, t years after 1990. The function g(t) = 1 + - ++30 models the population, in thousands, of Golden Valley, t years
after 1990. The graphs of the functions are shown. For what years from 1990 to 2010 was the
population of Golden Valley greater than or equal to that of Waterville?
en
From 1990 to 1998
un
From 2006 to 2010
55
50
45
40
35
30
25
20
15
From 1990 to 1998, and from 2006 to 2010
10
5
From 1998 to 2006
0
2
4
6
8 10 12 14 16 18 20

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