For Many Countries Tourism Is an Important Source of Revenue $$\text { Tourism } ( \$ \text { bill } ) = 21.5 + 0.295 \text { visitors (mil1). }$$

For many countries tourism is an important source of revenue. Data are collected
On the number of foreign visitors to a country (in millions) and total tourism revenue (in
Billions of dollars) for a sample of 10 countries. The regression equation fit was $$\text { Tourism } ( \$ \text { bill } ) = 21.5 + 0.295 \text { visitors (mil1) . }$$
If we were interested in
Predicting the tourism revenue for a particular country that had 30 million foreign
Visitors,

A) we should construct a confidence interval using this equation.
B) we should construct a predication interval using this equation.
C) we should not use this equation because it is not significant.
D) we should use the correlation.
E) we should use the standard error.