Question: Analysis of McDonald's and Dow Jones stock market data.
a. Find the 95% confidence interval for the percent change in McDonald's stock on a day in which the Dow Jones Index is unchanged.
b. Find the 95% confidence interval for the mean percent change in McDonald's stock for the idealized population of all days in which the Dow Jones Index is unchanged.
c. Find the 95% confidence interval for the percent change in McDonald's stock on a day in which the Dow Jones Index is up 1.5%.
d. Find the 95% confidence interval for the mean percent change in McDonald's stock for the idealized population of all days in which the Dow Jones Index is up 1.5%