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The recent default rate on all student loans is 7.1 percent. In a recent random sample of 282 loans at private universities, there were 15 defaults. Does this sample show sufficient evidence that the private university loan default rate is below the rate for all universities, using a left- tailed test at a = .010? (r1) Choose the appropriate hypothesis. a. Ho: 11' 2.071; H1: 1::