Question

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Question 10 Thirty (30) middle-aged American men were weighed prior to taking part in a research program that targeted their exercise routine over a six month period. The initial weight, which ranges from 140 lbs to 230 lbs, is shown in the following stem and leaf display STEM I LEAVES 14 15 16 17 18 19 20 21 0 3 5 8 0 0 5 6779 0 2 3 79 23 5 8 23 0 Approximately what proportion of middle-aged men weighed more than 190 lbs initially? (a) 0.30 (b) 0.17 (c) 0.33 (d) 0.70 (e) 0.83

Answer 1

After observing the above stem and leaf plot we find that there are 30 middle aged amercan men 9

weighted more than 190 lbs so the required proportion will be 9/30=.30

Correct option (A) .30