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Lab Review Ch 9-11 5 Historically, the proportion of adults over the age of 24 who smoke has been .30. In recent years, much Information has been published and alred on radio and TV that smoking is not good for one's health. A sample of 630 adults revealed only 20 percent of those sampled smoked. 10 points Develop a 98 percent confidence Interval for the proportion of adults who currently smoke. (Round your t-value to 2 declmal place and final answers to 3 declmal places.) Confidence Interval is up to| Would you agree that the proportion is less than 30 percent? eBook Click to select) Yes No References Lab Review Ch 9-11 6 Research by First Bank of lllnois 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 believes 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.) Book > References State the decision rule for.01 significance level. (Round your answer to 2 declmal (b)places.) Reject Ho if z (c)Compute the value of the test statistic. (Negative amount should be Indicated by a mlnus 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 wait more than five minutes? Use the .01 significance level Click to select Ho. It is the customers walt more not reasonable Click to select) to conclude that more than 8 percent of reasonable Lab Review Ch 9-11 Saved 7 Required Informatlon [The following information applles 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 Holdtite glue, but only 10 hooks were used. The sample results, In pounds, were Part 1 of 5 10 points Epox Holdtite Sample mean Sample standard deviation Sample size 230 270 8 10 5 12 Book References What is the null hypothesis? Multiple Choice Lab Review Ch 9-11 Saved 9 Required Informatlon The following Information applles 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 Holdtite glue, but only 10 hooks were used. The sample results, in pounds, were Part 3 of 5 10 points Epox Holdtite Sample mean Sample standard deviation Sample size 230 270 8 10 5 12 eBook References State the decision rule for .Ol significance level: HO: 2, Hi 1 2 (Negative amount should be Indicated by a minus sign. Round your answers to 3 declmal places.) Reject Ho If tis not betweenand Lab Review Ch 9-11 5 Historically, the proportion of adults over the age of 24 who smoke has been .30. In recent years, much Information has been published and alred on radio and TV that smoking is not good for one's health. A sample of 630 adults revealed only 20 percent of those sampled smoked. 10 points Develop a 98 percent confidence Interval for the proportion of adults who currently smoke. (Round your t-value to 2 declmal place and final answers to 3 declmal places.) Confidence Interval is up to| Would you agree that the proportion is less than 30 percent? eBook Click to select) Yes No References Lab Review Ch 9-11 6 Research by First Bank of lllnois 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 believes 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.) Book > References State the decision rule for.01 significance level. (Round your answer to 2 declmal (b)places.) Reject Ho if z (c)Compute the value of the test statistic. (Negative amount should be Indicated by a mlnus 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 wait more than five minutes? Use the .01 significance level Click to select Ho. It is the customers walt more not reasonable Click to select) to conclude that more than 8 percent of reasonable Lab Review Ch 9-11 Saved 7 Required Informatlon [The following information applles 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 Holdtite glue, but only 10 hooks were used. The sample results, In pounds, were Part 1 of 5 10 points Epox Holdtite Sample mean Sample standard deviation Sample size 230 270 8 10 5 12 Book References What is the null hypothesis? Multiple Choice Lab Review Ch 9-11 Saved 9 Required Informatlon The following Information applles 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 Holdtite glue, but only 10 hooks were used. The sample results, in pounds, were Part 3 of 5 10 points Epox Holdtite Sample mean Sample standard deviation Sample size 230 270 8 10 5 12 eBook References State the decision rule for .Ol significance level: HO: 2, Hi 1 2 (Negative amount should be Indicated by a minus sign. Round your answers to 3 declmal places.) Reject Ho If tis not betweenand