Question

Question 14

 Let Y represent the profit (or loss) for a certain company X years after 1975. Based on the data shown below, a statistician calculates a linear model Y = -0.52X + 8.72. 

use the model to estimate the profit in 1981

y = _______ 

Question 16 

Annual high temperatures in a certain location have been tracked for several years. Let X represent the year and Y the high temperature. At the 0.01 significance level, does the data below show significant (linear) correlation between X and Y? 

Yes, significant correlation 

No

Question 17 

Based on the data shown below, calculate the correlation coefficient (rounded to three decimal places) 

Answer 1