(1 point) Samples were collected from two ponds in the Bahamas to compare salinity values (in parts per thousand). Several samples were drawn at each site. Pond 1: 37.03, 37.03, 37.45, 37.01, 36.75, 36.72, 37.02 Pond 2: 38.53, 38.66, 39.21, 38.51, 38.89 Use a 0.05 significance level to test the claim that the two ponds have the same mean salinity value. (a) The test statistic is -4.51829