How does an increase in the number of observations affect the t ratio and the standard error a. The t ratio increases, and the standard error decreases. b. The tratio decreases, and the standard error increases. c. The t ratio decreases, and the standard error decreases. d. The t ratio increases, and the standard error increases. The larger our standard error of estimates, a. the larger the R² b. c. the smaller the R² d. the larger the tratio the smaller the tratio

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