C62. Based on 1988 census data for the 50 States in the United Stares, the correlation between the number of churches per State and the number of violent crimes per State was 0.85. We can conclude that: A. There is a causal relationship between the number of churches and the number of violent crimes committed in a city. B. The correlation is partly spurious because of the confounding variable of population size: both number of churches and number of violent crimes are related to the population size. C. ince the data comes from a census, or nearly complete enumeration of the United States, there must be a causal relationship between the number of churches and the number of violent crimes. D.The relationship is not causal because only correlations of +1 or -1 show causal relationships. C63. For which one of these relationships could we use a regression analysis? Only one choice is correct. A. Relationship between weight and height. B. Relationship between political party membership and opinion about abortion. C. Relationship between gender and whether person has a tattoo. D. Relationship between eye color (blue, brown, etc.) and hair color (blond, etc.). C64. In a simple linear regression model (One independent variable), If we change the input variable by 1 unit. How much output variable will change? A. By 1. B. No change. C. By the size of the Intercept. D. By the size of the Slope