You are planning on purchasing a new car and have your eye on a specific model. You know that new car prices are projected to increase at a rate of 5% per year for the next few years. Find the cost of the car 4 years from now if the current price is $27,000. Write the equation that represents the projected cost C and provide a solution for the problem.
a.
C = 27,000 (4) Superscript 1.05
$115,751.53
c.
C = StartFraction 27,000 (4) Over 1.05 EndFraction
$106,666.67
b.
C = 27,000 (1.05) Superscript 4
$32,818.67
d.
C = 27,000 (1.05) (4)
$113,400

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