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A secondary school is contracting its alumni asking for donations to help put up new computer laboratory. Past records show that 80% of the alumni

A secondary school is contracting its alumni asking for donations to help put up new computer laboratory. Past records show that 80% of the alumni will make a contribution of of at least P50.00. A random sample of 20 alumni is selected. What is the probability that exactly 15 alumni will make a donation of at least P50.00?

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