A group of rats are subjected to a response test which can be either positive or negative. If the stimulus is applied to three rats in succession, what is the probability that both the first and the last respond positively? (Assume responses are independent and probability of positive is 1/2)
University of Ilorin STA112 2025A past question
- 1/4
- 1/2
- 1/8
- 1/6
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