Mathematics

20 June, 07:07

To evaluate the quality of the cellular phones coming off the assembly line, the manufacturer takes one every half-hour and tests it. About 1 out of 10,000 is found to have a minor mechanical problem. The company assumes from this data that 1 out of every 10,000 cellular phones they produce will be returned for mechanical problems after being purchased. Determine whether this conclusion is valid. Justify your answer.

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