I got these wrong. Please help

Incorrect Question 1 The null hypothesis states: The population mean after treatment is the same as it was before treatment O The sample mean after treatment is the same as it was before treatment @ The population mean after treatment is not the same as it was before treatment The sample mean after treatment is not the same as it was before treatment Incorrect Question 2 Critical region can be described as: Outcomes that are expected if the null is true Outcomes that are very unlikely if null is true O The difference between the sample mean and population mean Another way of saying alpha level