“Mean Travel Time to Work” (Applied Example
8.5) provides commuting information for various cities and states in the United States. Considering the city of Chicago and the confidence interval information given:
a. What confidence interval term is the 32.7?
b. What confidence interval term is the 31.9? The 33.5?
c. What confidence interval term is the 90%?
d. What is the maximum error?
e. Calculate the standard error.