Reconsider the previous exercise.
a. Comment on whether the conditions for applying a theory-based paired t-test are satisfied.
b. Regardless of your answer to part (a), conduct a theory-based paired t-test. Report the test statistic and p-value.
c. Summarize your conclusion about strength of evidence against the null hypothesis.

Data from previous exercise

A student who did volunteer work at an animal shelter wanted to see if cats really respond aggressively to catnip (Jovan, Stats magazine, 1999). Using a sample of 15 cats, she recorded how many €œnegative interactions€ (such as hissing or clawing) each cat engaged in during a 15-minute period prior to being given a teaspoon of catnip and also in the following 15-minute period. Her conjecture was that the number of negative interactions would increase after the introduction of the catnip. Her data follow:

Negative interactions before catnip Negative interactions after catnip Cat name Amelia Bathsheba 3 6. Boris 4. Frank Jupiter Lupine 4 5 Madonna Michelangelo Oregano 3 Phantom 5 Posh 1 Sawyer Scary Slater Tucker 2. 2. 2.