1.! The article "Photocharge Effects in Dye Sensitized Emulsions at Millisecond Range Exposures" gives the accompanying data on x=%light absorption at 5800 A and y= peak photo voltage.

x

4

8.7

12.7

19.1

21.4

24.6

28.9

30.5

y

0.12

0.28

0.55

0.68

0.85

1.02

1.15

1.29

1. Construct a scatter plot of this data. What does it suggest?!
2. Assuming that the simple linear regression model is appropriate, obtain the equation of the
3. estimated regression line.!
4. What proportion of the observed variation in peak photovoltage can be explained by the
5. model relationship?!
6. The article's authors claim that there is a useful linear relationship between % absorption
7. and peak photovoltage. Do you agree? Construct the ANOVA table. Test at the 0.05 level of
8. significance. !
9. Construct 95% confidence interval of the expected peak photovoltage associated with 15%

light absorption. !

f.! Construct 95% prediction interval of the expected peak photovoltage associated with 15% light absorption.!