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In: Statistics and Probability

Suppose a random sample of 51 fatal crashes in 2015 in which driver had a positive...

Suppose a random sample of 51 fatal crashes in 2015 in which driver had a positive blood alcohol concentration (BAC) results in a mean BAC of 0.158 gram per deciliter (g/dL) with a standard deviation 0.010 g/dL. Construct and interpret the 99% confidence interval for the mean BAC in fatal crashes in which the driver had a positive BAC. Use 4 non-zero decimal places in your calculations.

a. Find the t-alpha/2,df

b. Find and the margin of error (ME).

c. Find the Upper bound and the Lower bound. Interpret the confidence interval.

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Expert Solution

orchestra answered 1 year ago
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