Previously 3 Of Mothers Smoked More Than 21 Cigarettes During Their Pregnancy An Obstetrician Believes That The Perce 1 (391.29 KiB) Viewed 33 times
Previously 3 Of Mothers Smoked More Than 21 Cigarettes During Their Pregnancy An Obstetrician Believes That The Perce 2 (156.84 KiB) Viewed 33 times
Previously, 3% 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 3% today. She randomly selects 150 pregnant mothers and finds that 2 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? = 10.03 Ho: P 0.03 versus H, р (Type integers or decimals. Do not round.) 1 - = be used to approximate the P-value Because npo (1-P) 10, the normal model (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? O A. 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 3%. OB. 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 3%. X VE More Next Staterunch
P-value = (Round to three decimal places as needed.) Is there sufficient evidence to support the obstetrician's statement? O A. 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 3%. O B. 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 3%. O C. Yes, reject the null hypothesis because the P-value is less than a. There is sufficient evidence to conde that the percentage of mothers who smoke 21 or more cigarettes during pregnancy is less than 3%. OD. 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 3%. x : vo (1,1) More
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