A manufacturer of automobile headlights claims that 10% of a batch of these headlights are defective....
A manufacturer of automobile headlights claims that 10% of a batch of these headlights are defective. A quality control inspector tests a random selection of 300 headlights in the batch. The number of defective headlights in this random sample is 35, which is more than expected. Estimate the probability of getting at least 35 defective lights in a random sample of 300. Based on the result, does it appear that the manufacturer’s claim of 10% defectiveness is accurate? Was there a problem with the sample? What is the probability of it? Is the claim usual or unsual?
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