If 4 of the 1000 test subjects are randomly selected,

If 4 of the 1000 test subjects are randomly selected, find the probability that they all had true negative test results. Is such an event unlikely?

If 4 of the 1000 test subjects are randomly selected,

a. Assume that the 4 selections are made with replacement.

b. Assume that the 4 selections are made without replacement.

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