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

question 19

Multiple Choice

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.

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