__.',_____. ___. ___ ______ 21) The county health department has concerns about the chlorine level at a local water park. Suppose the proportion of the water readings on Monday is pm and the proportion ofthe water readings on Thursday is pt. A study found a 90% confidence interval for pm - pt is (-0.05, 0.04). Give an interpretation of this confidence interval. A) The probability that the chlorine level on Thursday is between 5% less and 4% more than the chlorine level on Thursday is 90%. B) We are 90% condent that the chlorine level on Monday is between 5% less and 4% more than the chlorine level on Thursday. 0) ll samples were repeatedly drawn from the same populations under the same circumstances, the true population difierence (pm - pt) would be between -0.05 and 0.04 90% of the time. D) We are 90% confident thatthe chlorine level on Thursday is between 5% less and 4% more than the chlorine level on Monday