Question

{Exercise 8.21 (Algorithmic)} Consumption of alcoholic beverages by young women of drinking age has been increasing in the United Kingdom, the United States, and Europe (The Wall Street Journal, February 15, 2006). Data (annual consumption in liters) consistent with the findings reported in The Wall Street Journal article are shown for a sample of 20 European young women. 277 82 199174 97 170 222 115 150 169 164 106 89 1710 930 93110 79 Assuming the population is roughly symmetric, calculate the sample mean and sample standard deviation. Then construct a 95% confidence interval for the mean annual consumption of alcoholic beverages by European young women (Round all answers to 1 decimal). The mean is 139 and the standard deviation is The confidence interval is ( 173.62

Answer 1

The statistical software output for this problem is:

One sample T confidence interval: : Mean of variable 95% confidence interval results: Variable Sample Mean Std. Err. DF L. Limit U. Limit Data 128 15.257612 19 96.06545 159.93455

Hence,

Mean = 128

Standard deviation = 68.2

Confidence interval: (96.1, 159.9)