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Among a group of 25 tvs, 5 tvs are broken, and we randomly select 8 tvs.  ...

Among a group of 25 tvs, 5 tvs are broken, and we randomly select 8 tvs.  

a) What is the probability that among the 8t vs selected at least 2 are broken

b) Determine the standard deviation and the expected value of the broken tvs among the 8 tvs selected

Math   Statistics-And-Probability   
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