A researcher investigated the effect of green light, in comparison to red light, on the growth rate of bean plants. The following table shows data on the heights of. plants (in inches) from the soil to the first branching stem. 2 weeks after germination.48 Use these data to construct a 95% confidence interval for the difference in mean effect that red light has on bean plant growth, in comparison to green light and interpret the interval in the context of the study.