The following chart shows the number of police officers patrolling a section of a city and the number of crimes reported for 8 successive days.

a) Determine the correlation coefficient between the number of police officers and the number of crimes reported.

b) Determine whether a correlation exists at a = 0.05.

c) Determine the equation of the line of best fit for the number of police officers and the number of crimes reported.

d) Use the equation in part (c) to estimate the average number of crimes reported when 14 police officers are patrolling that section of the city.

Round both m and b the nearest hundredth.

Transcribed Image Text:

Police officers 20 12 18 15 22 10 20 12 Crimes reported 8 10 12 9 6 15 7 18