4. Hoping to inspire goodwill toward the less fortunate during the holiday season, WalletHub compared the most populated U.S. cities across 21 key metrics to determine where Americans are most economically disadvantaged. Based on such indicators as the child poverty rate, the food-insecurity rate, and the uninsured rate, they ranked cities in terms of "neediness," where 1 was the neediest (Detroit had that unfortunate distinction). From their list of neediness rankings, the following 13 cities were selected at random and matched to their homicide rates per 100,000 population. WalletHub's Neediness Homicide City Rank rate Baltimore 11 55.4 Charlotte 94 6.9 Cincinnati 32 22.1 Dallas 48 10.4 Houston 60 13.3 Indianapolis 12 17.1 Kansas City 61 23.0 Memphis 3 20.5 Miami 23 17.1 New Orleans 9 41.7 Orlando 88 11.9 Philadelphia 6 17.9 St. Louis 20 59.3 a. Calculate the strength of association between neediness and homicide (Note: be sure to re-rank the cities). b. Using the .05 level of significance, test to see if cities with greater neediness have higher rates of homicide