How do the counties in Oklahoma compare in terms of the proportion of drinkers who are considered heavy drinkers to the US who's proportion is 0.147 (14.7%)? "Heavy" drinking is defined as the consumption, on average, of more than one drink per day for women or two drinks per day for men in the past 30 days. To determine this, a simple random sample of 20 counties in Oklahoma was selected and the proportion of heavy drinkers was recorded for the selected counties. The claim is that theaverageproportion of heavy drinkers in counties in Oklahoma is the same as the proportion for the US (0.147) with 1% level of significance to test this claim.

See the attached Table.

One-Sample Test Test Value = 0.147 95% Confidence Interval of Sig. (2- Mean the Difference df tailed) Difference Lower Upper Proportion of Heavy -2.556 19 .019 -.013150 -.02392 -.00238 Drinkers