11. Chirping Crickets Male crickets chirp by rubbing their front wings together, and their chirping is temperature dependent. The table below shows the number of chirps per second for a cricket, recorded at 10 different temperatures:

a. Find the least-squares regression line relating the number of chirps to temperature.

b. Do the data provide sufficient evidence to indicate that there is a linear relationship between number of chirps and temperature?

c. Calculate r2. What does this value tell you about the effectiveness of the linear regression analysis?

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Chirps per Second 20 16 19 18 18 16 14 17 15 16 Temperature 31 22 32 29 27 23 20 27 20 28