Answers very from: All of the countries, or an indivudal country. + 2004 energy

Question

Answers very from:

All of the countries, or an indivudal country. + 2004 energy use or 1990 energy use + smaller/larger/decreased/remained/narrow/wider/more/less

Examine the regression and scatterplot showing the regression line, 99% confidence interval, and 99% prediction interval using 1990 and 2004 energy use kg oil equivalent per $1000 GDP for a sample of 96 countries. The response variable is 2004 Energy Use. Complete parts a through c belovw on a) Explain the meaning of the 99% prediction interval in this context. For b) Explain the meaning of the 99% confidence interval in this context. For for a c) How has the removal of the extraordinary point changed the regression model? How is it likely to affect the intervals discussed in a) and b)? The removal of the extraordinary point the regression model predicts, with 99% confidence, the interval of possible values of V based on the value of 'I the regression model predicts, with 99% confidence, the possible values of based on the value of Because it is an interval Vthe variation or uncertainty is ?| so the interval is the R-Squared and Adjusted R-Squared values. The slope has ? The standard deviation of the residuals has to ndprecise. , thereby making both intervals Type an integer or decimal rounded to one decimal place as needed.)

Explanation / Answer

(a)

For all of the countries, the regression model predicts, with 99% confidence, the interval of possible values of 1990 energy use based on the value of 2004 energy use.

(b)

For all of the countries the regression model predicts, with 99% confidence, the possible values of mean 1990 Energy use based on the value of mean 2004 energy use. Because it is an interval for a mean the variation of uncertainty is smaller so the interval is narrower.

(c)

The removal of the extraordinary point increased the R- squared and adjusted T-square values. The slope has increased. The standard deviation of the residuals has lowered to 19.73, thereby making both intervals narrower and more precise.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.