How could you reword the research hypotheses below to null hypotheses?a. Smoking during pregnancy increases the risk of a child being born prematurely.
Ho: Smoking has no effect on pregnancy
Ha: Smoking causes premature birth
To reword the research hypothesis as a null hypothesis, we would assume that there is no relationship or effect between smoking during pregnancy and the risk of a child being born prematurely.
Null hypothesis: Smoking during pregnancy has no impact on the risk of a child being born prematurely.