Use the Bonner Frozen Foods sales volume data in Table 14.5 on page 599 and the model y = β₀ + β₁x₁ + β₂x₂ + ε to find

(1) A point estimate of and a 95 percent confidence interval for the mean sales volume in all sales regions when $2,000 is spent on radio and television advertising and $5,000 is spent on print advertising.

(2) A point prediction of and a 95 percent prediction interval for the sales volume in an individual sales region when $2,000 is spent on radio and television advertising and $5,000 is spent on print advertising.