Question

The common cricket can be used as a crude thermometer. The colder the temperature, the slower the rate of chirping. The table below shows the average chirp role of a cricket at various temperatures Chirp Rate Temperature (chirps/second) СЕ 1.9 47.7 2.7 67.7 2.8 1.4 42.8 1.7 54.7 3.0 63.3 65.4 The last-squares regression line for predicting the temperature from the chirp rate is 9 -25.6974 + 13.8826x Predict the temperature if the chirp rate is 16 chirps per second. 22"F 44F SIF

Answer 1

Here

ŷ = 25.6974 + 13.8826x

x = 1.6

therefore

ŷ = 25.6974 + 13 8826 × 1.6

= 47.90956

= 48

Therefore correct option

d) 48