For each of the scenarios below, determine the appropriate test (one sample t test, two sample t test, matched pairs t test, some other type of test), and whether the study is a survey, observational or experiment. Do dog owners of Labrador retrievers take longer walks with their dogs than owners of Chihuahuas? A random sample of 35 owners of Labrador retrievers and a random sample of 40 Chihuahua owners were obtained. The time (in minutes) each owner took their dog for a walk was recorded. Type of test: Type of study one sample two sample paired some other type of testFor each of the scenarios below, determine the appropriate test {one sample t test, two samplet test. matched pairst test. some other type of test). and whether the study is a survey, observational or experiment. Do dog owners of Labrador retrievers take longer walks with their dogs than owners of Chihuahuas? A random sample of 35 owners of Labrador retrievers and a random sample of40 Chihuahua owners were obtained. The time {in minutes) each owner took their dog for a walk was recorded. observational ' : experiment -- depression in individuals with severe depression? A depression score (number of points between D and 100) was obtained before and 3 months after they had started to take the antidepressant drug {before after}. Type of study. e Does an antidepressant drug reduce depression in individuals with severe depression? A depression score (number of points between 0 and 100) was obtained before and 3 months after they had started to take the antidepressant drug (before - after). Type of test: Type of study: Marc wants to know if the mean age of the prison population in his city is less than 26 years. He obtains a random sample of 25 prisoners, and asked them their age. He found a mean age of 24.4 years and a standard deviation of 9.2 years. At a significance level of 0.05, what is his conclusion? Type of test: Type of study: A researcher wishes to test the effectiveness of a flu vaccination. A sample of 450 people were randomly assigned to either receive a vaccine, a placebo, or no vaccination. The number in each group who later caught the flu was recorded. Type of test: Type of study:A professor was interested in whether students do better on a course midterm if they take the course a second time. A random sample of 22 students who had to take calculus twice is taken from a very large university. The professor records both midterm grades for these students (that from their first attempt at the course and that from their second) and finds the difference between the two (second grade - first grade). Is there evidence that students do better on the calculus midterm when they have to take the course a second time? Type of test: Type of study