X + https://uwrvf.instructure.com/courses/382816/quizzes/674041/take D Question 2 12 pts 2. A consulting firm estimates the quarterly sales (in millions of dollars) of a Regional Airlines called "U Fly", by the following significant model: E(Sales) = 300.5 + 1.37(T) - 2.6Q1 - 6.8Q3 + 8.65Q4 Where E(Sales) is the average sales for each quarter (in millions of dollars), T is a time index defined as 1, 2, 3, .......,32, and 32 represents the the first quarter of 2021, Q1 - 1 when in the first quarter, 0 otherwise, Q3 =1 when in the third quarter, 0 otherwise, and Q4 - 1 when in the fourth quarter, 0 otherwise. All estimated coefficients are statistically significant. a. Briefly explain the meaning of estimated sample slopes for the trend (1.37) and the fourth quarter (8.65). b. Forecast actual sales (in dollars) for the second, third, and fourth quarters of 2021 as well as the first quarter of 2022. Explain your answers. Edit View Insert Format Tools Table 12pt ~ Paragraph B IYA & V TRY : O Pr LFC W