Jeremy, a police researcher, is concerned that police officers may not be assigned to areas where they are needed. He wishes to find out whether there is a connection between the number of police officers assigned to a particular block and the number of violent incidents reported on that block during the preceding week. For ten different blocks (designated A through J), the number of patrolling officers assigned and the number of prior violent incidents reported are as follows: A B C D E F G H I J X: Violent incidents 7 10 3 9 8 0 4 4 2 8 Y: Officers assigned 6 9 3 10 8 1 4 5 2 7 a. State the null and alternative hypotheses b. Calculate the value of Pearson's r for the data recorded above. c. Test the statistical significance if the two variables are related. d. Use MS Excel to verify your answer (copy and paste the results on your answer sheet) e. State the Decision and Conclusion
Jeremy, a police researcher, is concerned that police officers may not be assigned to areas where they are needed. He wishes to find out whether there is a connection between the number of police officers assigned to a particular block and the number of violent incidents reported on that block during the preceding week. For ten different blocks (designated A through J), the number of patrolling officers assigned and the number of prior violent incidents reported are as follows: A B C D E F G H I J X: Violent incidents 7 10 3 9 8 0 4 4 2 8 Y: Officers assigned 6 9 3 10 8 1 4 5 2 7 a. State the null and alternative hypotheses b. Calculate the value of Pearson's r for the data recorded above. c. Test the statistical significance if the two variables are related. d. Use MS Excel to verify your answer (copy and paste the results on your answer sheet) e. State the Decision and Conclusion
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Jeremy, a police researcher, is concerned that police officers may not be assigned to areas where they are needed. He wishes to find out whether there is a connection between the number of police officers assigned to a particular block and the number of violent incidents reported on that block during the preceding week. For ten different blocks (designated A through J), the number of patrolling officers assigned and the number of prior violent incidents reported are as follows:
| A | B | C | D | E | F | G | H | I | J | |
| X: Violent incidents | 7 | 10 | 3 | 9 | 8 | 0 | 4 | 4 | 2 | 8 |
| Y: Officers assigned | 6 | 9 | 3 | 10 | 8 | 1 | 4 | 5 | 2 | 7 |
a. State the null and alternative hypotheses
b. Calculate the value of Pearson's r for the data recorded above.
c. Test the statistical significance if the two variables are related.
d. Use MS Excel to verify your answer (copy and paste the results on your answer sheet)
e. State the Decision and Conclusion
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