An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in California. Suppose that
the mean income is found to be $22.7$22.7 for a random sample of 183183 people. Assume the population standard deviation is known to be $6.3$6.3. Construct the 85%85% confidence interval for the mean per capita income in thousands of dollars. Round your answers to one decimal place.
Juan rode more slowly, Rita's graph is much steaper than Juan's. This means that she went faster and in less time. Juan took longer time and went on a slower pace. That's why I chose Juan.