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kayla941
kayla941
25.03.2021 • 
Mathematics

A study done by NATA (national athletic trainers) surveyed random samples of 1366 high school seniors and 1679 high school freshmen in Georgia. Results showed that 44 of the freshmen and 26 of the seniors had used anabolic steroids. i) Do the data give convincing evidence of a difference in the proportion of all Georgia high school freshmen and seniors who have used anabolic steroids? State appropriate hypothesis for a test to answer this question. Define any parameters you use. ii) Carry out a significance test at the alpha = 0.05 level. iii) Construct and interpret a 95% confidence interval for the difference between the population proportions. Explain how the confidence interval is consistent with results of the test in part ii.

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