I need help determing what the assumptions are of these three probelms listed below. 1. Statewide, the police clear by arrest 35% of the robberies reported to them. A researcher takes a random sample of all the robberies (N=207) reported to a metropolitan police department in one year and finds that 85 of the robberies were cleared by arrest. Use the 5-step model to determine if the local arrest rate is significantly different from the statewide rate at the 10% level of significance. What are the assumptions for this problem? 2. The director of the local Boys Club has claimed for years that membership in the club reduces juvenile delinquency. Now a cynical member of your funding agency has demanded proof of your claim. Random samples of members and nonmembers are gathered and interviewed with respect to their involvement in delinquent activities. A sample of 40 club members produced a mean number of delinquent activities of 10.3 with standard deviation of 2.7. A sample of 55 non- members produced a mean number of delinquent activities of 12.3 with standard deviation of Use the 5-step model and a 5% significance level to report findings for the funding agency. What are the assumptions for this problem? 3. A local church is interested in determining how length of residence in the present community relates to church attendance. Using a random sample of 15 individuals, they gathered data on how many times in the previous 5 weeks each individual attended church services. The data are provided below. Length of residence in the community Less than 2 years 2-5 years More than 5 years 0 0 1 1 2 3 3 3 3 4 4 4 4 5 4 Using the 5-step model, determine whether and how church attendance is related to length of residence in the community. Use 5% and 1% levels of statistical significance. What are the assumptions for this problem?
I need help determing what the assumptions are of these three probelms listed below.
1. Statewide, the police clear by arrest 35% of the robberies reported to them. A researcher takes a random sample of all the robberies (N=207) reported to a metropolitan police department in one year and finds that 85 of the robberies were cleared by arrest.
Use the 5-step model to determine if the local arrest rate is significantly different from the statewide rate at the 10% level of significance.
-
- What are the assumptions for this problem?
2. The director of the local Boys Club has claimed for years that membership in the club reduces juvenile delinquency. Now a cynical member of your funding agency has demanded proof of your claim. Random samples of members and nonmembers are gathered and interviewed with respect to their involvement in delinquent activities. A sample of 40 club members produced a mean number of delinquent activities of 10.3 with standard deviation of 2.7. A sample of 55 non- members produced a mean number of delinquent activities of 12.3 with standard deviation of
Use the 5-step model and a 5% significance level to report findings for the funding agency.
-
- What are the assumptions for this problem?
3. A local church is interested in determining how length of residence in the present community relates to church attendance. Using a random sample of 15 individuals, they gathered data on how many times in the previous 5 weeks each individual attended church services. The data are provided below.
|
Length of residence in the community |
||
|
Less than 2 years |
2-5 years |
More than 5 years |
|
0 |
0 |
1 |
|
1 |
2 |
3 |
|
3 |
3 |
3 |
|
4 |
4 |
4 |
|
4 |
5 |
4 |
Using the 5-step model, determine whether and how church attendance is related to length of residence in the community. Use 5% and 1% levels of statistical significance.
- What are the assumptions for this problem?
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