Is there a difference in the amount of time spent volunteering between freshman and seniors? one hundred freshman and one hundred seniors were asked how many hours they had spent volunteering in the past month. what type of test would they conduct to test this claim?

There is a difference in the amount of time spent volunteering between fresh man and seniors. The type of test suitable for testing this claim is called two proportion z test. This test is suitable because, simple random method was used for sampling, the samples were independent, each population was at least ten times bigger than the samples and each sample included at least ten failures and ten successes.