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A random sample of size 81 is taken from a large population, measuring the time it takes to complete a driver’s license examination. The sample mean was found to be 43 minutes, and the sample standard deviation 5.71 minutes. Construct a 95% confidence interval around the sample mean.

  • statistics - ,

    95% = men ± 1.96 SEm

    SEm = SD/√n

    I'll let you do the calculations.

  • statistics - ,

    i dont know

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