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Mathematics, 20.06.2020 22:57 bkimswift7

Researchers conducted a study to determine the effects of different types of alcohol on the peak alcohol concentration. In one part of the study, the researchers gave 1515 randomly selected males a controlled volume of wine and monitored the subjects' alcohol concentration following the period of consumption. The legal limit for driving is 80 mg/dL80 mg/dL (mg/dL represents milligrams per deciliter of blood). A hypothesis test was conducted to see if the mean peak alcohol concentration from drinking wine was different from the legal driving limit. This objective was reflected in the null and alternative hypotheses H0:µHA:µ=80 mg/dL≠80 mg/dL H0:μ=80 mg/dLHA:μ≠80 mg/dL The mean peak alcohol concentration of the 15 participants after drinking a controlled volume of wine was 61.7 mg/dL61.7 mg/dL with a standard deviation of 10.81 mg/dL.10.81 mg/dL. Calculate the 95%95% confidence interval for the mean peak alcohol concentration after drinking a controlled volume of wine. Give the lower and upper bounds precise to two decimal places.

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