A researcher wishes to estimate the average blood alcohol concentration? (BAC) for drivers involved in fatal accidents who are found to have positive BAC values. He randomly selects records from82such...

A researcher wishes to estimate the average blood alcohol concentration? (BAC) for drivers involved in fatal accidents who are found to have positive BAC values. He randomly selects records from82such drivers in 2009 and determines the sample mean BAC to be0.17?g/dL with a standard deviation of0.070?g/dL. Completeparts? (a) through? (d) below.?(a) A histogram of blood alcohol concentrations in fatal accidents shows that BACs are highly skewed right. Explain why a large sample size is needed to construct a confidence interval for the mean BAC of fatal crashes with a positive BAC.A.Since the distribution of blood alcohol concentrations is highly skewed? right, a large sample size is necessary to ensure that the distribution of the sample mean is approximately normal.B.Since the distribution of blood alcohol concentrations is highly skewed? right, a large sample size is needed to ensure that it contains at least? 5% of the population.C.Since the distribution of blood alcohol concentrations is highly skewed? right, a large sample size is needed to maximize the margin of error to ensure that both tails are accounted for in the confidence interval.D.Since the distribution of blood alcohol concentrations is highly skewed? right, a large sample size is needed to minimize the margin of error to ensure only the peak of the sampling distribution is captured in the confidence interval.