HLA is a protein found on most cells in your body and is use

HLA is a protein found on most cells in your body and is used to match a patient with a donor for a bone marrow transplant. match a patient with a donor for a bone marrow transplant. The probability that two siblings are an HLA match is 1 out of 4, and about 30% of patients who need a bone marrow transplant have a suitable donor in their family. The remaining 70% of patients must nd a match in a registry of bone marrow donors. The probability that two unrelated people are an HLA match is 1 out of 20,000. Suppose a patient needs a bone marrow transplant and has no siblings. What is the estimated chance that the patient nds a suitable donor in a registry of 30,000 donors, none of which are related to the patient? Round to four decimal places.

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