Question

In: Statistics and Probability

Aiden had 12 stocks in his portfolio, 7 of them are high tech companies and 5...

Aiden had 12 stocks in his portfolio, 7 of them are high tech companies and 5 are not. If h randomly selected 4 stocks to evaluate whether to sell or not hat is the probability that at least on of the selceted is high tech company

The answer is 98/99 but im not sure how to do the steps.

Solutions

Expert Solution

P(at least one of the selected is hight tech company) = 1 - P(all of them are not high tech company)

                                                             = 1 - 5C4 / 12C4

                                                             = 1 - 5/495

                                                             = 98/99 (ans)

orchestra answered 2 years ago
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