A manufacturer of children toys claims that less than 5% of his products are defective. When 500 toys were drawn from a large production run, 7% were found to be defective. A) What is the population of interest? B) What is the sample? C) What is the
parameter? D) What is the statistic? E) Does the value 5% refer to the parameter or the statistic? F) Is the value 7% a parameter or a statistic? G) Explain briefly how the statistic can be used to make inferences about the parameter to test the claim.
All toys in the production run; 500 toys; Proportion of the production run that is defective; Proportion of sample toys that are defective; Parameter; Statistic; Because the sample proportion is more than 5%, we may conclude that the claim is false.
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