A study of teenage suicide included a sample of 123 girls and 96 boys between ages of 12 and 16 years selected scientifically from admissions records to a private psychiatric hospital. Suicide attempts were reported by 60 of the girls and 18 of the boys. We assume that the girls constitute a simple random sample from a population of similar girls and likewise for the boys. Question 1 What is the sample proportion of boys that attempted suicide (rounded off to four decimals)? Question 2 What is the sample proportion of girls that attempted suicide (rounded off to four decimals)? Question 3 Calculate the difference in proportion between the girls and the boys (rounded off to four decimals). Question 4 Calculate the appropriate critical value/table value for a 99% confidence interval (rounded off to three decimals). Question 5 Construct a 99% confidence interval for the difference between the two population proportions (rounded off to three decimals)? Question 6 Considering your answer in Question 5 is there a statistically significant difference between the population proportion of boys and girls that attempt suicide? Explain your answer.
A study of teenage suicide included a sample of 123 girls and 96 boys between ages of 12 and 16 years selected scientifically from admissions records to a private psychiatric hospital. Suicide attempts were reported by 60 of the girls and 18 of the boys. We assume that the girls constitute a simple random sample from a population of similar girls and likewise for the boys.
Question 1
What is the sample proportion of boys that attempted suicide (rounded off to four decimals)?
Question 2
What is the sample proportion of girls that attempted suicide (rounded off to four decimals)?
Question 3
Calculate the difference in proportion between the girls and the boys (rounded off to four decimals).
Question 4
Calculate the appropriate critical value/table value for a 99% confidence interval (rounded off to three decimals).
Question 5
Construct a 99% confidence interval for the difference between the two population proportions (rounded off to three decimals)?
Question 6
Considering your answer in Question 5 is there a statistically significant difference between the population proportion of boys and girls that attempt suicide? Explain your answer.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
