D Question 8 1p In the simple regression model setting, o is the standard deviation of the error term c. Assuming nothing else changes, which of the following statements is TRUE? The smaller the value of o, the more accurate our predictions will be. Oro will get smaller as the sample size gets larger. The larger the slope coefficient, the more accurate our predictions will be. Oo will be smaller for regressions with steeper true slope coefficients. None of the above. D Question 9 1 pts In a recent Gallup poll of 1203 adults, 68% reported being "very satisfied" with the rollout of the US vaccination process (up 24% from the last poll conducted in February). Report a 95% confidence interval for the true proportion of adults that are "very satisfied". (0.65, 0.71) O (0.60, 0.76) (0.68, 0.84) O (0.52, 0.68) O Cannot be determined from the information given