A recent study found dos owners were happier than cat owners Nearly twice the amount of dog owners reporting that they were very happy compared to can owners A researcher isborigates this finding by conducting a study. where 16 subjects are randeny assigned to ather play withs puppy for an hour or to play with a kitten for I hav. At the end of an hour, a blood sample is taken from each sub et to measure their endorphine levels. The results are puppy . 13 , 19 14, 17, 10, 20, 19 Kitten 14, 11, 7, 8, 7, 9, 11 Test the null hypothesis wihl Ad fit 0 1 of significance