' Unit 1 (Ch 2-3) Quiz- 25 questions Question 16 5 pts possible Submit Quiz In 2017 a pollution index was calculated for a sample of cities in the eastern states using data on air and water pollution. Assume the distribution of pollution indices is unimodal and symmetric. The mean of the distribution was 43.9 points with a standard deviation of 11.3 points. Complete parts (a) through (0) below. a. What percentage of eastern cities would you expect to have a pollution index between 21.3 and 66.5 points? % (Type a whole number.) b. What percentage of eastern cities would you expect to have a pollution index between 32.6 and 55.2 points? % (Type a whole number) c. The pollution index for an eastem city, in 2017, was 53.9 points. Based on this distribution, was this unusually high? Explain. O A. Yes, because 53.9 falls within two standard deviations of the mean, so it is therefore an unusually high pollution index. 0 B. Yes, because 53.9 falls within three standard deviations of the mean, so it is therefore an unusually high pollution index. 0 C. No, because 53.9 falls within two standard deviations away from the mean, and it is therefore not an unusually high pollution index. 0 D. No, because 53.9 falls exactly two standard deviations away from the mean, and it is therefore not an unusually high pollution index. Time Remaining: 01:07:45 m