11.31 MINITAB was used to complete a chi-square test of independence between the number of boatrelated manatee deaths and two Florida counties.

County Boat-Related Deaths Non–Boat-Related Deaths Total Deaths Lee County 23 25 48 Collier County 8 23 31 Chi-Square Test: Boat-Related Deaths, Non-boat-Related Deaths Expected counts are printed below observed counts Chi-Square contributions are printed below expected counts Boat-Related Non-boat-Related Deaths Deaths Total 1 23 25 48 18.84 29.16 0.921 0.595 2 8 23 31 12.16 18.84 1.426 0.921 Total 31 48 79 Chi-Sq  3.862, DF  1, P-Value  0.049

a. Verify the results (expected values and the calculated 2) by calculating the values yourself.

b. Use Table 8 to verify the p-value based on the calculated df.

c. Is the proportion of boat-related deaths independent of the county? Use   0.05.