Concerned about graffiti, mayors of nine suburban communities instituted a citizen Community Watch program.

Community	Monthly Incidents After	Monthly Incidents Before
Burr Oak	2	1
Elgin Corners	3	6
Elm Grove	1	2
Greenburg	0	9
Huntley	6	12
North Lyman	6	1
South Lyman	3	10
Pin Oak	5	6
Victorville	2	10

(a)Choose the appropriate hypotheses to see whether the number of graffiti incidents declined. Assume _dis the mean difference in graffiti incidents before and after.

1. H₁:_d 0 versusH₀:_d> 0.
2. H₀:_d 0 versusH₁:_d< 0.

multiple choice 1

• a
• b

(b)Find the test statistict_calc.(A negative amount should be indicated by a minus sign. Round your answer to 2 decimal place.) t_calc (c)State the critical valuet_critfor= .05.(A negative amount should be indicated by a minus sign. Round your answer to 3 decimal place.) t_crit (d)Find thep-value.(Round your answer to 4 decimal place.) p-value (e)State your conclusion. We (Click to select) can cannot conclude that the number of graffiti incidents has decreased.