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Read each question, find and underline the part of the text which answers the question. Don't choose an answer simply because a word in the question appears in the text. Examples of this can sometimes distract you from the correct answer.REVIEW Chapter 8 & 9 AP Statistics Name: KEY. 1. In a study of the effects of acid rain, a random sample of 100 trees from a particular forest is examined. Forty percent of these show some signs of damage. Which of the following statements is correct? (a) 40% is a parameter (b) 40% is a statistic