Exhibit 10.10.A bank is trying to determine which model of safe to install.The bank manager believes that each model is equally resistant to safe crackers,but sets up a test to be sure.He hires nine safe experts to break into each of the models,timing each endeavor.The results (in seconds)are given next,paired by expert.Let D be the difference: Time to break Safe 1 minus Time to break Safe 2. Refer to Exhibit 10.10.Assuming the difference D is normally distributed,what is the 95% confidence interval for μ_D? A)[-1.7537,5.7537] B)[-1.1459,5.1459] C)[-0.6739,4.6739] D)[-0.5368,4.5368]

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The Answer of Exhibit 10.10.A bank is trying to determine which model of safe to install.The bank manager believes that each model is equally resistant to safe crackers,but sets up a test to be sure.He hires nine safe experts to break into each of the models,timing each endeavor.The results (in seconds)are given next,paired by expert.Let D be the difference: Time to break Safe 1 minus Time to break Safe 2. Refer to Exhibit 10.10.Assuming the difference D is normally distributed,what is the 95% confidence interval for μ_D? A)[-1.7537,5.7537] B)[-1.1459,5.1459] C)[-0.6739,4.6739] D)[-0.5368,4.5368]