4.
Reason :
This kind of problem is a one sample proportion test in which we test whether a proportion of people are satisfied or not using a hypothesis test. We use Z test for proportions. Hence the answer.
Reason:
In this case, we test if the mean prices of textbooks for online and mean prices for campus bookstore rental program are equal or greater or less than each other. Hence it is best for us to use t-test for two means to compare this.
Reason:
In this case, we want to test if the dog breed is dependent on whether the dog gets a particular disease or not. It is best for us to use Chi-square test for independence of attributes for this. We can conclude based on the results of the hypothesis test. One attribute will be the dog breed and the other attribute will be whether the dog has got a particular disease or not.
4. Match which analysis would go with each situation. You will not use all choices! (3...