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...

Extracted text: 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 125 pregnant mothers and finds that 5 of them smoked 21 or more cigarettes during pregnancy. Test the researcher's statement at the a = 0.05 level of significance. What are the null and alternative hypotheses? < 0.05="" họ:="" p="0.05" versus="" h,:="" (type="" integers="" or="" decimals.="" do="" not="" round.)="" because="" npo="" (1-="" po)="||" 1o,="" the="" normal="" model="" be="" used="" to="" approximate="" the="" p-value.="" (round="" to="" one="" decimal="" place="" as="">