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Automated electron backscattered diffraction is now being used in the study of fracture phenomena. The following information is on misorientation angle (degrees). Class: 0-<5 5-<10 10-<15 15-<20 20-<30 30-<40 40-<60 60-<90 Rel freq: 0.176 0.167 0.178 0.131 0.192 0.073 0.051 0.032 (a) Is it true that more than 50% of the sampled angles are smaller than 15°, as asserted by researchers? O Yes, the proportion of sampled angles smaller than 15° is greater than 0.50. O Yes, the proportion of sampled angles smaller than 15° is not greater than 0.50. O No, the proportion of sampled angles smaller than 15° is greater than 0.50. O No, the proportion of sampled angles smaller than 15° is not greater than 0.50. (b) What proportion of the sampled angles are at least 30°? (Round your answer to three decimal places.) (c) Roughly what proportion of angles are between 10° and 25°? (Round your answer to three decimal places.) (d) Construct a histogram. Density 0.03 0.02 0.01 O Density 0.04 0.03 0.02 0.01 10 20 O 10 20 40 40 60 60 90 90 Angle Angle 0.03 Density 0.02 0.01 O 0.03 Density 0.02 O 0.01 10 20 The distribution of misorientation angles is heavily negatively skewed. O The distribution of misorientation angles is heavily positively skewed. The distribution of misorientation angles is approximately symmetric. 0 10 20 Comment on any interesting features. (Select all that apply.) The distribution of misorientation angles is bimodal. O Without more precise information, we cannot tell if the data contain outliers. There are two obvious outliers. 40 40 60 60 90 90 Angle Angle