At a recent Wayne Newton concert, a survey was conducted that asked a random sample of 30 people their age (Age) and the number of concerts (Concert) they have attended since the beginning of the year. Then, these data were used to estimate the relationship between "age" and the "Concert." Summary statistics and regression output follow: Variable Mean Std. deviation Concert 4.65 1.6313 Age 55 10.7711 Concert = -3.0115 0.1257 Age SE: 1.188 0.0221 R^2 0.69 Fill in the following blanks. (Round to four decimals). A) What is the residual standard error? B) What is the average number of concerts attended by all 45-year-old individuals? C) What is the standard error for the average number of concerts when Age = 45? D) What is a 95% confidence interval for the average number of concerts attended by all 45-year-old individuals? to