A psychologist claims that the number of repeat offenders will decrease when first-time offenders complete a particular rehabilitation course. You randomly select 10 prisons and record the number of repeat offenders during a two-year period. Then, after first-time offenders complete the course, you record the number of repeat offenders at each prison for another two-year period. The results are shown in the table below. At α = 0.025, can you support the psychologist’s claim?

Transcribed Image Text:

Prison 1 2 3 4 5 6 7 8 9 10 Before 21 34 9 45 30 54 37 36 33 40 After 19 22 16 31 21 30 22 18 17 21