In the Youth Risk Behavior Survey (a study of public high school students), a random sample showed that 45 of 675 girls and 103 of 621 boys had been in a physical fight on school property one or more times during the past 12 months. What is an approximate 95% confidence interval for the difference in proportions of students who had been in a fight (proportion of boys minus proportion of girls)?
Correct Answer:
Verified
Q81: Use the following information for questions:
Data
Q82: Use the following information for questions:
Data
Q83: Use the following information for questions:
Random
Q84: Use the following information for questions:
Random
Q85: In a recent poll of 500 13-year-olds,
Q87: A study was conducted to learn about
Q88: Use the following information for questions:
Many
Q89: Use the following information for questions:
Many
Q90: Use the following information for questions:
Many
Q91: Use the following information for questions:
A
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