Demographics and Population Statistics A recent study suggests that the linguistic diversity in a…
Demographics and Population Statistics A recent study suggests that the linguistic diversity in a community is related to the number of traffic accidents.25 A random sample of U.S. cities was obtained and the annual road fatalities per 1000 people (y) and the linguistic diversity (x, Greenberg diversity index) was recorded for each.
a. Construct a scatter plot for these data, and describe the relationship between the two variables. Does your answer support the conclusions of the recent study? Why or why not?
b. Find the estimated regression line. Explain how the sign of 1 supports the conclusions of the recent study.
c. The Greenburg diversity index in the United States is approximately 0.333. Find a 95% interval for the true mean number of accidents per 1000 people in the United States.