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Un article trouvé pour ce sujet.
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Microwave ovens and probability |
2008-09-04 |
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Vi pose la question :
A microwave oven manufacturer claims that only 10% of the ovens it makes will need repair in the first year. Suppose three recent customers are independently chosen.
a. If the manufacturer is correct, what is the probability that at least two of the three ovens will need repair in the first year?
b. If at least two of the three customers' ovens need repair in the first year, what inference may be made about the manufacturer's claim?
Harley Weston lui répond. |
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