In: Statistics and Probability
One concern about the depletion of the ozone layer is that the increase in UV light will decrease crop yields. An experiment was conducted in a green house where soybean plants were exposed to varying levels of UV levels - measured in Dobson units. At the end of the experiment the yield (kg) was measured. A regression analysis was performed with the following results:
Term____|_Estimate__|_Std Error_|_t ratio_|_Prob>ltl_|_Lower 95%_|_Upper 95%
Intercept__3.9800118__0.053774__74.01___<.0001___3.8638398___4.0961838
uv_______-0.046285___0.010741__*hidden__0.0008_______****hidden****
A 95% confidence interval for the mean yield when the UV reading is 20 Dobson units is: