Crickets and Temperature The table below lists numbers of cricket chirps in 1 minute and the temperature in oF. For the prediction interval, use 1000 chirps in 1 minute and use a 90% confidence level.

Chirps in 1 min 882 1188 1104 864 1200 1032 960 900 Temperature 1 F2 69.7 93.3 84.3 76.3 88.6 82.6 71.6 79.6 Variation and Prediction Intervals. In Exercises 17–20, find the

(a) explained variation,

(b) unexplained variation, and

(c) indicated prediction interval. In each case, there is sufficient evidence to support a claim of a linear correlation, so it is reasonable to use the regression equation when making predictions.