A professor is doing research on individual differences in the ability of students to become hypnotized. As part of the experiment, she administers a portion of the Stanford Hypnotic Susceptibility Scale to 85 students who volunteered for the experiment. The results are scored from 0-12, with 12 indicating the highest degree of hypnotic susceptibility and 0 the lowest. The scores are shown here.
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9
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7
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11
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4
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9
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7
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8
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8
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10
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6
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6
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4
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3
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5
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5
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4
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6
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2
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6
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8
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10
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8
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6
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7
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3
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7
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1
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6
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5
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3
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2
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7
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6
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2
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6
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9
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4
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7
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9
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6
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5
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9
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5
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0
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5
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6
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3
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6
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7
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9
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7
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5
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4
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2
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9
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8
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11
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7
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12
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3
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8
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6
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5
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4
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10
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7
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4
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10
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8
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7
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6
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2
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7
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5
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3
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4
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8
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6
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4
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5
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4
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6
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5
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8
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7
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a. Construct a frequency distribution of the scores.
b. Construct a histogram of the frequency distribution constructed in part a.
c. Is the distribution symmetrical or skewed?
d. Determine the percentile rank of a score of 5 and a score of 10. clinical, cognitive, health.