1. The table below is based on records of accidents in 1988 compiled by the Department of Highway Safety and Motor Vehicles in Florida. The analyst would like to know if there is a relationship between Injury type and seatbelts a. Would you consider this an experiment? Do you think that these data were collected as part of an experiment? Explain b. Give the null and alternative for the test c. Use the chi-square test to run the test at a = 0.05 d. Give the real-world answer e. Determine the expected counts for each cell and comment on the validity of the Chi-Square test TABLE 2.9 Data for Problem 2.3 Safety Equipment Injury in Use Fatal Nonfatal None 1601 162,527 Seat belt 510 412,368 Source: Florida Department of Highway Safety and Motor Vehi cles. 2. It is expected that the true blood types proportions for Americans is given in the table below. For a sample of 200 Americans, there blood types were tested and also are given in the table below. A B AB O Observed Counts 89 18 12 81 Hypothesized Proportion 0.41 0.1 0.04 0.45 Give the null and alternative hypotheses for this test 5P Test this hypothesis at a=0.05 C. Give the real-world answer d. Check to see if the test that you used in part b is justified