choose fast and correct answer....

Suppose that the distribution of scores on an exam can be described by a normal curve with mean 130. The 16th percentile of this distribution is 110. (Use the Empirical Rule.) (a) What is the 84th percentile? 20 (b) What is the approximate value of the standard deviation of exam scores? (c) What z score is associated with an exam score of 100? (d) What percentile corresponds to an exam score of 1707 O 0.15 O 0.3 O 2.5 O 13.5 O 34 O 50 O 68 O 86.5 O 97.5 99.7 99.85 (e) Do you think there were many scores below 707 Explain. A score of 70 is standard deviations below the mean, and so the percentage of scores below 70 would be approximately |--Select--. v