I scientific company has a system that Icases research quipment for a period of 7 days. Being reevaluated in view of a possible new system that could be either longer or shorter Join 7 Days, Equipment leasing records were being consulted to determine the lease periods actually used by various laprotunics A random sample of nine records reavelet the following lease periods in days: 8, 4, 6, 1 5 3, 2, 7 9. Test the null hypothesis with T, at the , 05 level of significance