A study of high crime locations in Miami, Florida was conducted. The number of crimes in each of the eight sample areas during a one year period was recorded. Then a neighborhood watch program was inaugurated. The number of crimes before and after the watch is indicated in the table that follows. Has there been a decrease in the number of crimes since the program was inaugurated? Use the 0.05 significance level.
Find the test statistic. Use matched pairs t procedure. (This is suppose to be a table below)
Number of crimes by area A B C D E F G H
Before watch 8 7 6 3 17 12 8 9
After watch 2 7 3 6 8 13 3 5
Is there enough evidence of a decrease in the number of crimes since the program was inaugurated?
What is the Null and Alternative Hypothesis?