Mathematics, 13.01.2021 01:20 jazzwok
Mr. Gupta gave his students a quiz with three questions on it. Let XXX represent the number of questions that a randomly chosen student answered correctly. Here is the probability distribution of XXX along with summary statistics:
X=# correctX 0 1 2 3
P(X) .05 .20 0.50 .25
Mean:Ī¼x =1.95
Standard Deviation ĻXā0.8
What are the mean and standard deviation of Y?
Answers: 3
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