Kathy is studying the salinity (level of salt) in a sea near her city. The sea has historically had an average level of salinity of u = 3.9%. Kathy would like to test if recent climate change has increased the salinity of the sea. Kathy intends to conduct a hypothesis test with the following hypotheses: Ho: u = 3.9 HA: u > 3.9 Before Kathy conducts this test, her friend Craig tells her that he strongly suspects the salinity won't have increased. He thinks a lot of evidence that has already been collected and studied suggests that the salinity has instead decreased from its old level of 3.9%. Craig believes that Kathy should conduct the following hypothesis test instead: Ho: u = 3.9 HA: p