Question 13 4 pts In the NutritionStudy data frame, Fiber measures the number of grams of fiber the participants ate each day. Here is it's favstats: 1 favstats (NutritionStudy$Fiber) A data.frame: 1 x 9 min Q1 median Q3 max mean sd n missing 3.1 9.15 12.1 15.6 36.8 12.78857 5.330192 315 Decide if each statement is true or false: The mean fiber eaten in the population is definitely 12.79 grams per day. [ Select ] Our best estimate for the mean fiber eaten in the population is 12.79 grams per day. [ Select ] In the empty model for Fiber, b_0 is 12.79. [ Select ] In the empty model for Fiber, b_1 = 12.79. [ Select ]