The estimated regression equation below has been developed to predict annual ticket sales for a local miniature golf course.

= 11 4x₁ + 8x₂ + 19x₃

where

• x1 = number of weekend days closed due to inclement weather in the peak summer season
• x2 = population within 25 miles (in 1,000s)
• x3 = 1 if any form of marketing/advertising was used; 0 otherwise
• = estimated annual ticket sales (in $1,000s)

(a)Fully interpret the meaning of the coefficient of

x₁.

(Give the answer in dollars.)For each additional weekend day during the peak summer season when the miniature golf course was closed, the annual ticket sales were ---Select--- lower higher on average by $ .(b)Fully interpret the meaning of the coefficient of

x₃.

(Give the answer in dollars.)When marketing/advertising ---Select--- was was not used, annual ticket sales at the miniature golf course were higher on average by $ .(c)Predict annual ticket sales (in dollars) for the miniature golf course with 4 weekend days closed during the peak summer season, a population of 16,000 within 25 miles, and seven online advertisements.$