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March 27, 2017

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A random sample of 16 mid-sized cars tested for fuel consumption gave a mean of 26.4 kilometers per liter with a standard deviation of 2.3 kilometers per liter.
i) Assuming that the kilometers per liter given by all mid-sized cars have a normal distribution, find a 99% confidence interval for the population mean μ.

  • Statistics - ,

    99% = mean ± 2.575 SEm

    SEm = SD/√n

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