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On average, 4 out 6 customers think that electric cars will dominate the market in 20 years. A random sample of 5 customers is selected.

On average, 4 out 6 customers think that electric

cars will dominate the market in 20 years. A random sample of 5 customers is selected. Find the probability

that

(a) exactly 4 customers think that electric cars will dominate the market in 20 years.

(b) at least 2 customer think that electric cars will dominate the market in 20 years.

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