Answer Happy

Use the following information to answer questions 1 through 9. Bill claims that he spends an average of one hour or more on household chores. His wife, Mary doubts his claim. She randomly records eleven weeks of Bills chore time. 70 22 54 57 56 47 12 60 43 10 56
6) Use a 5% level of significance to support Mary's belief. The decision rule is: a) Reject if z>1.96 b) Reject if z<-1.96 c) Reject if t>1.812 d) Reject if t<-1.812 e) Reject if t>2.131 or t<-2.131 f) Reject if t<-1.753 or t> 1.753 g) Reject if z>1.645 or z<-1.645 h) Reject if t>2.228 i) Reject if t<-2.228 j) None of the above. 7) The standardized test statistic for this problem equals: a) 2.5 b) -2.5 c) -1.7 d) 1.7 e) 2.6 f) -2.6 g) -1.1 h) 1.1 i) -3.2 j) 3.2
8) The null hypothesis in problem 5 is to be tested at the 5% level of significance. The null hypothesis should be: a) rejected b) not rejected c) impossible to determine 9) How large a sample would be necessary to estimate Bill's mean chore time with a margin of error, E-5 minutes at a 90% confidence level?)