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 $21.3 for a random sample of 2817 people. Assume the population standard deviation is known to be $7.9. Construct the 98 % confidence interval for the mean per capita income in thousands of dollars. Round your answers to one decimal place. Answer How to enter your answer (opens in new window) Lower endpoint: 20.31 Upper endpoint: 21.08 Tables Keypad Keyboard Shortcuts

An economist wants to estimate the mean per copita income (in thousands of dollars) for a major city in California, Suppose that the mean income is found to be $21.3 for a random sample of 2817 people. Assume the population standard deviation is known to be $7.9 Construct the 98% confidence interval for the mcan per capita income in thousands of dollars. Round your answers to one decimal place. Answer How to enter your answer (opens in new window) Lower endpoint: Upper endpoint