Lab Review Ch 9-11 Research by First Bank of Iilinois revealed that 8 percent of its customers wait more than five minutes to do their banking when not using the drive-through facility. Management considers this reasonable and will not add more tellers unless the proportion becomes larger than 8 percent. The branch manager at the Litchfield Branch belleves that the wait Is longer than the standard at her branch and requested additional part-time tellers. To support her request she found that, In a sample of 120 customers, 12 waited more than five minutes. 10 points (a)State the null hypothesis and the alternate hypothesis. (Round your answers to 2 declmal places.) oBook References State the decision rule for.01 significance level. (Round your answer to 2 declmal blplaces.) Reject Ho i z (c)Compute the value of the test statistic. (Negatlve amount should be Indicated by a minus sign. Round your answer to 3 declmal places.) Value of the test statistic (d)ls it reasonable to conclude that more than 8 percent of the customers walt more than five minutes? Use the.01 significance level. Click to select the custome Ho. It is Click to select) to conclude that more than 8 percent of rs walt more not reasonable reasonable Lab Review Ch 9-11 6 Soved Required Information The following information applies to the questions displayed below A test is to be conducted Involving the mean holding power of two glues designed for plastic. First, a small plastic hook was coated at one end with Epox glue and fastened to a sheet of plastic. After it dried, weight was added to the hook until it separated from the sheet of plastic. The weight was then recorded. This was repeated untl 12 hooks were tested. The same procedure was followed for Holdtite glue, but only 10 hooks were used. The sample results, in pounds, were: Part 1 of s 10 points Epox Holdtite Sample mean 230 270 Sample standard dn 5 8 12 10 eBook Sample size References What is the null hypothesis? Multiple Cholce Lab Review Ch 9-11 6 Saved 8 Required Information [The following Intormation applies to the questions displayed below A test is to be conducted involving the mean holding power of two glues designed for plastic. First, a small plastic hook was coated at one end with Epox glue and fastened to a sheet of plastic. After It dried, weight was added to the hook until It separated from the sheet of plastic. The weight was then recorded. This was repeated until 12 hooks were tested. The same procedure was followed for Holdtte glue, but only 10 hooks were used. The sample results, in pounds, were Part 2 otS 10 points Epox Holdtute 230 270 Sample mean Sample standard deviation Sample slize Book 12 10 Alternative hypothesls Multiple Choice
