The monthly absolute estimate of global (land and

ocean combined) temperature indexes (degrees C) in 2000 and

2001 (www.ncdc.noaa.gov/oa/climate/) are:

(a) Graph the data and fit a regression line to predict 2001 temperatures

from those in 2000. Is there a significant regression

at α = 0.05? What is the P-value?

(b) Estimate the correlation coefficient.

(c) Test the hypothesis that ρ= . 0 9 against the alternative

ρ ≠ 0.9 with α = 0.05. What is the P-value?

TABLE 11-10 Data for Correlation Exercise

(d) Compute a 95% confidence interval for the correlation coefficient.

Transcribed Image Text:

2000: 12.28, 12.63, 13.22, 14.21, 15.13, 15.82, 16.05, 16.02, 15.29, 14.29, 13.16, 12.47 2001: 12.44, 12.55, 13.35, 14.22, 15.28, 15.99, 16.23, 16.17, 15.44, 14.52, 13.52, 12.61