Previously, 4% 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 4% today. She...

Extracted text: Previously, 4% 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 4% today. She randomly selects 135 pregnant mothers and finds that 4 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? Họ: P = 0.04 versus H,: p < 0.04="" (type="" integers="" or="" decimals.="" do="" not="" round.)="" because="" npo="" (1-="" po)="U" (round="" to="" one="" decimal="" place="" as="" needed.)="" 10,="" the="" normal="" model="" be="" used="" to="" approximate="" the="">