Question

Suppose that we wish to estimate the mean μ and standard deviation u of the (theoretically) infinite population of all Hawk mileages. To do this, we will ran-domly select a sample of n = 5 mileages from this population. We first randomly select a sample of five Hawks from a subpopulation of 1000 Hawks that National Mot?rs has produced and that we assume is representative of the population of all Hawks. Then we will test drive each randomly selected automobile under the previously described conditions and record the mileage obtained. Suppose that we obtain the following sample of mileages: {??, ??, ??, ??, ??} = {30.7, 31.8, 30.2, 32.0, 31.3} Calculate: Sample mean, sample variance, sample standard deviation R code and paper and pencil

Answer 1

Given data is {30.7, 31.8, 30.2, 32.0, 31.3}

Mean:

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R-code: