Gina looks at the architectural plan of a four-walled room in which the walls meet each other at right angles. the length of one wall in the plan is 17 inches. the length of the diagonal of the floor of the room in the plan is approximately 18.79 inches.

is the room in the shape of a square? explain how you determined your answer. show all your work.

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25

Ebert used to make $22 an hour, but got a 10% raise. how much more will he make in a 40 hour work week with raise?

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