a. A change is made that should improve student satisfaction with the parking situation at a local high school. Before the change, 37% of students approve of the parking that’s provided. The null hypothesis 

H₀: p > 0.37 is tested against the alternative H_a: p=0.37 .

b. A researcher suspects that the mean birth weights of babies whose mothers did not see a doctor before delivery is less than 3000 grams. The researcher states the hypotheses as

H₀: x¯=3000 grams

H_a: x¯<3000 grams

Explain what’s wrong with the stated hypotheses. Then give correct hypotheses.