The article Photocharge Effects in Dye Sensitized Ag[Br,I]Emulsions at Millisecond Range

Chapter 12, Problem 77

(choose chapter or problem)

The article Photocharge Effects in Dye Sensitized Ag[Br,I]Emulsions at Millisecond Range Exposures (PhotographicSci. and Engr., 1981: 138144) gives the accompanyingdata on light absorption at 5800 A and y peak photovoltage.x 5 %a. Construct a scatter plot of this data. What does it suggest?b. Assuming that the simple linear regression model is appropriate,obtain the equation of the estimated regression line.c. What proportion of the observed variation in peak photovoltagecan be explained by the model relationship?d. Predict peak photovoltage when % absorption is 19.1,and compute the value of the corresponding residual.e. The articles authors claim that there is a useful linearrelationship between % absorption and peak photovoltage.Do you agree? Carry out a formal test.f. Give an estimate of the change in expected peak photovoltageassociated with a 1% increase in light absorption.Your estimate should convey information about theprecision of estimation.g. Repeat part (f) for the expected value of peak photovoltagewhen % light absorption is 20.