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# (Solved): In a random sample of five mobile devices, the mean repair cost was $$\ 70.00$$ and the standard ...

In a random sample of five mobile devices, the mean repair cost was $$\ 70.00$$ and the standard deviation was $$\ 14.00$$. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a $$99 \%$$ confidence interval for the population mean. Interpret the results. The $$99 \%$$ confidence interval for the population mean $$\mu$$ is (Round to two decimal places as needed.) The margin of error is $$\$$ (Round to two decimal places as needed.) Interpret the results. Choose the correct answer below. A. If a large sample of mobile devices are taken approximately $$99 \%$$ of them will have repair costs between the bounds of the confidence interval. B. With $$99 \% 6$$ confidence, it can be said that the repair cost is between the bounds of the confidence interval. C. With $$99 \%$$ confidence, it can be said that the population mean repair cost is between the bounds of the confidence interval. D. It can be said that $$99 \%$$ of mobile devices have a repair cost between the bounds of the confidence interval.

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