Question
I am interested in determining which sex, male or female, is more likely to have a tattoo. I collected data from 240 females and 215
I am interested in determining which sex, male or female, is more likely to have a tattoo. I collected data from 240 females and 215 males. 100 of the females and 67 of the males reported having at least one tattoo. I fed the data into Statistix and the following printout was produced.
Hypothesis Test - Two Proportions Sample Size Successes Proportion Males 215 67 0.31163 Females 240 85 0.35417 Difference -0.04254 Null Hypothesis: p1 = p2 Alternative Hyp: p1 p2 SE (difference) 0.04429 Z (uncorrected) -0.96 P 0.3368 95% Confidence Interval of Difference -0.12935 < p1-p2 < 0.04427
Interpret the confidence interval above.
Group of answer choices
At the 95% confidence level, we cannot determine which proportion (male or female students with a tattoo) is bigger.
We are 95% confident that the proportion of all female students with a tattoo is larger than the proportion of all male students with a tattoo.
We are 95% confident that the proportion of all female students with a tattoo is lower than the proportion of all male students with a tattoo.
We are 95% confident that the proportion of all female students with a tattoo is equal to the proportion of all male students with a tattoo.
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