5 - Statistical Inference Descriptions In this homework, you will practice hypothesis testing using given data. Prerequisites: Make sure you have 1) Review the example given on page 3 of this document. General descriptions: Download the data set "ComputerRepairTimes.xlsx" from Blackboard (This xlsx file have three sheets in total), and perform a hypothesis test on the data. The data is a sample of computer repair times in days for a company. Determine if the company can claim that its average repair time is less than 15 days. Assume a level of significance of 0.05. In your submission, make sure you show all of your work and include the following steps as shown in the example on page 3. Instructions: 1. State the null hypothesis (H0) and alternative hypothesis (H1). 2. Calculate the t-statistic. You will have to first find the sample mean, sample standard deviation, and sample size. Use whatever tools you have or manually compute them. 3. Find the critical value. Use either Appendix A, Table A.2 from the textbook or "t-table.pdf" posted with the homework. 4. Determine the decision rule, and the reject and fail to reject regions. 5. Determine your conclusion of whether you should reject