1. An article in a journal reports that 34% of Americanfathers take no responsib
ID: 2952207 • Letter: 1
Question
1. An article in a journal reports that 34% of Americanfathers take no responsibility for child care. A researcher claimsthat the figure is higher fo r fathers in the town of Cheraw. Arandom sample of 233 fathers from Cheraw yielded 96 who did nothelp with child care. Do the data provide sufficient evidence toconclude that the proportion of fathers who take no responsibilityfor child care is higher than 0.34 in Cheraw? Use a 0.05significance level. Ho:p = 0.34 Ha:p > 0.34 =0.05 Test statistic:z=2.32 P-Value = 0.0102 a. Do not reject Ho b. Reject Ha c. Reject Ho d. Do not reject Ha e. Accept H .34 2. A nationwide study of American homeowners revealed that 65%have one or more lawn mowers. A lawn equipment manufactirer,located in Omaha, feels the estimate is too low for households inOmaha. Can the value 0.65 be rejected if a survey of 490 homes inOmaha yields 331 with one or more lawn owmers? Use=0.05 Ho:p = 0.65 Ha:p >0.65 Test statistic: z=1.64 P-Value:p = 0.0905 a. Reject Ha. b. Do not reject Ho c. Reject Ho d. Do not reject Ha e. Cannot draw a conclusion with the information given 1. An article in a journal reports that 34% of Americanfathers take no responsibility for child care. A researcher claimsthat the figure is higher fo r fathers in the town of Cheraw. Arandom sample of 233 fathers from Cheraw yielded 96 who did nothelp with child care. Do the data provide sufficient evidence toconclude that the proportion of fathers who take no responsibilityfor child care is higher than 0.34 in Cheraw? Use a 0.05significance level. Ho:p = 0.34 Ha:p > 0.34 =0.05 Test statistic:z=2.32 P-Value = 0.0102 a. Do not reject Ho b. Reject Ha c. Reject Ho d. Do not reject Ha e. Accept H .34 2. A nationwide study of American homeowners revealed that 65%have one or more lawn mowers. A lawn equipment manufactirer,located in Omaha, feels the estimate is too low for households inOmaha. Can the value 0.65 be rejected if a survey of 490 homes inOmaha yields 331 with one or more lawn owmers? Use=0.05 Ho:p = 0.65 Ha:p >0.65 Test statistic: z=1.64 P-Value:p = 0.0905 a. Reject Ha. b. Do not reject Ho c. Reject Ho d. Do not reject Ha e. Cannot draw a conclusion with the information givenExplanation / Answer
C) is the correct answer, since p=0.0102<=0.05.Wereject H0. d) is the correct one, since p=0.0905>=0.05.We do notreject H0Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.