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
What rejection region would you use if you wanted to determine if the proportion of all male students with a tattoo differs from the proportion of all female students with a tattoo? Use alpha=.10
Group of answer choices
Reject Ho if z > 1.282 or z < -1.282
Reject Ho if z > 1.645
Reject Ho if z > 1.645 or z < -1.645
Reject Ho if z > 1.282
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