A truck that can carry no more than 7900 pounds is being used to transport refrigerators and up right pianos. Each refrigerator weighs 200 pounds and each piano weighs 475 pounds. How many refrigerators and how many pianos can do truck carry. And will 19 refrigerators and 11 pianos over load the truck

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