Roy's Toys received a shipment of 100,000 rubber duckies from the factory. The factory couldn't promise that all rubber duckies are in perfect form,
Roy's Toys received a shipment of 100,000 rubber duckies from the factory. The factory couldn't promise that all rubber duckies are in perfect form, but they promised that the percentage of defective toys won't exceed 5%. Roy wanted to get an estimation of the percentage of defective toys, and since he couldn't go over the entire 100,000 duckies, he took a random sample of 10 duckies. He found that 10% of them were defective. What type of statistical study did Roy use? Choose 1 answer: Sample study B Experiment Observational study Is the study appropriate for the statistical questions it's supposed to answer? Mark the most suitable choice. Choose 1 answer: Yes, because the sample was obtained randomly. Yes, because he sampled the correct population. No, because he had to check all toys and not just a sample. No, because his sample was too small.
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Authors: Barry Monk
2nd edition
1259345297, 978-0077836351, 77836359, 978-1259295911, 1259295915, 978-1259292484, 1259292487, 978-1259345296
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