Previously, 5% of mothers smoked more than 21 cigarettes during their pregnancy. An obstetrician believes that the percentage of mothers who smoke 21 cigarettes or more is less than 5% today. She randomly selects 115 pregnant mothers and finds that 3 of them smoked 21 or more cigarettes during pregnancy. Test the researcher's statement at the a=0.1 level of significance What are the null and alternative hypotheses? Ho versus H (Type integers or decimals. Do not round.) Because npo (1-Po) 10, the normal model be used to approximate the P-value. (Round to one decimal place as needed.) Find the P-value. P-value (Round to three decimal places as needed.) Is there sufficient evidence to support the obstetrician's statement? OA. No, do not reject the null hypothesis because the P-value is greater than a. There is not sufficient evidence to conclude that the percentage of mothers who smoke 21 or more cigarettes during pregnancy is less than 5%. OB. Yes, reject the null hypothesis because the P-value is less than a There is sufficient evidence to conclude that the percentage of mothers who smoke 21 or more cigarettes during pregnancy is less than 5%. OC. Yes, do not reject the null hypothesis because the P-value is greater than a There is sufficient evidence to conclude that the percentage of mothers who smoke 21 or more cigarettes during pregnancy is less than 5%. OD. No, reject the null hypothesis because the P-value is less than a. There is not sufficient evidence to conclude that the percentage of mothers who smoke 21 or more cigarettes during pregnancy is less than 50%