A study examining the performance of numerous assets from the United States and around the world confirms that a. U. S. equities are highly correlated with world government bonds and with the commodities index. b. most assets (including common stocks) have positive correlations with inflation. c. riskier assets with lower standard deviations experienced higher returns. d. beta did a better job of explaining the returns than standard deviation. e. riskier assets with higher standard deviations experienced lower returns.

Which is cheaper: eating out or dining in? the mean cost of a flank steak, broccoli, and rice bought at the grocery store is $13.04 (money.msn website, november 7, 2012). a sample of 100 neighborhood restaurants showed a mean price of $12.75 and a standard deviation of $2 for a comparable restaurant meal. a. develop appropriate hypotheses for a test to determine whether the sample data support the conclusion that the mean cost of a restaurant meal is less than fixing a comparable meal at home. b. using the sample from the 100 restaurants, what is the p-value? c. at a = .05, what is your conclusion? d. repeat the preceding hypothesis test using the critical value approach