A fair coin is tossed three times. Let X be number of heads. (1) Write out the sample space. (2) Find P(X=2) (3) Find E(X)
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A fair coin is tossed three times. Let X be number of heads.
(1) Write out the
(2) Find P(X=2)
(3) Find E(X)
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- Think of an exam with 3 questions. Now assume the student has studied enough that they have a 0.8 probability of answering a question correctly. Let X = the number of correct answers be a random variable. Find P(x=0) Find P(x=3) Find P(x=1) Find P(2<=x<=3) Find P(1<=x<=2)q2 exampleFor a dependent samples t-test to work, which of the following must be true? The same subjects are present in both groups The two samples should be of unequal sample size There are different subjects present in both groups There should be no significant outliers in the differences in the two related groups
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