According to the Bureau of Labor Statistics, the official unemployment rate was 10.4% among blacks and 4.7% among whites as of February 2015. (www.bls.gov/).
a. Identify the response variable and the explanatory variable.
b. Identify the two groups that are the categories of the explanatory variable.
c. The unemployment statistics are based on a sample of individuals. Were the samples of white individuals and black individuals independent samples or dependent samples? Explain.