Question: 1. Why is it possible to reject the null hypothesis when it is true?
2. Why is it possible to not reject the null hypothesis when it is false?
3. For a given sample size, if α is reduced from 0.05 to 0.01, what happens to ß?
4. For H0 : μ = 100, H1 : μ ≠ 100, and for a sample of size n, why is , larger if the actual value of is 90 than if the actual value of is 75?