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SCENARIO 8-3
To become an actuary,it is necessary to pass a series of 10 exams,including the most important one,an exam in probability and statistics.An insurance company wants to estimate the mean score on this exam for actuarial students who have enrolled in a special study program.They take a sample of 8 actuarial students in this program and determine that their scores are: 2,5,8,8,7,6,5,and 7.This sample will be used to calculate a 90% confidence interval for the mean score for actuarial students in the special study program.
-Referring to Scenario 8-3,for the confidence interval to be valid,it is necessary that test scores of students in the special study program on the actuarial exam be normally distributed.
Placebo Effect
A beneficial effect produced by a placebo drug or treatment, which cannot be attributed to the properties of the placebo itself, and must therefore be due to the patient's belief in that treatment.
Halo Effect
A cognitive bias where the perception of one positive trait (like attractiveness) in a person influences the observer's judgment to also perceive other unrelated positive traits.
Placebo Control Group
A group in experimental research that receives a sham or inert treatment, used to compare against the real treatment's effects.
Active Component
The element in a system or product that is responsible for its primary function or effect.
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