(a) Is it true that more than 50% of the sampled angles are smaller than 15 degr
ID: 3299768 • Letter: #
Question
(a) Is it true that more than 50% of the sampled angles are smaller than 15 degree, as asserted by researchers? Yes, the proportion of sampled angles smaller than 15 degree is greater than 0.50. Yes, the proportion of sampled angles smaller than 15 degree is not greater than 0.50. No, the proportion of sampled angles smaller than 15 degree is greater than 0.50. No, the proportion of sampled angles smaller than 15 degree is not greater than 0.50. (b) What proportion of the sampled angles are at least 30 degree? (c) Roughly what proportion of angles are between 10 degree and 25 degree? (d) Construct a histogram. Comment on any interesting features. (Select all that apply.) The distribution of misorientation angles is approximately symmetric. There are two obvious outliers. The distribution of misorientation angles is heavily negatively skewed. Without more precise information, we cannot tell if the data contain outliers. The distribution of misorientation angles is heavily positively skewed. The distribution of misorientation angles is bimodal.Explanation / Answer
a) as from above distribution proportion of sampled angle smaller then 15 degree =0.172+0.163+0.170=0.504
hence option C; No ; the proportion of sampled angles smaller then 15 degree is greater then 0.5.
b)proportion of sampled angles are at least 30 degree =0.070+0.059+0.032=0.161
c) proportion between 10 and 25 =0.170+0.14+0.195/2=0.4075
d)
bottom left graph is right
the distribution of misorientation angles is heavily positively skewed
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