Previously 5 of mothers smoked more than 21 cigarettes

Last updated: 7/14/2023

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 V V versus H Type integers or decimals Do not round Because npo 1 Po Round to one decimal place as needed Find the P value 10 the normal model be used to approximate the P value P value Round to three decimal places as needed Is there sufficient evidence to support the obstetrician s statement O A 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 5