Question 8 (1 point) A statistics test consists of 10 true/false questions. If students guess on...

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math Statistics-And-Probability

Answer 1

Answer #1

P(answered correctly) = 0.5

Mean= np = 10×0.5 =5

Standrad deviation = (np(1-p))^0.5 = (10×0.5×0.5)^0.5 = 1.58

Answer : option D

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Answer 2

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