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Author Question: A manufacturer of children toys claims that less than 5 of his products are defective. When 500 toys ... (Read 99 times)

itsmyluck

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on: Jun 24, 2018
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.

Question 2

Identify each of the following studies as either descriptive statistics or inferential statistics: A) Examine the heights of a sample of 50 NBA basketball players to see if the average height of all NBA basketball players is 75 inches. B) Post the average midterm score for the statistics class. C) Estimate the percentage of the US population that will vote for George W. Bush in the 2004 presidential election. D) Select a random sample of 250 babies born in 2002 and estimate the birth weight of all babies born during the same year. E) Examine the weights of a sample of 20 candy bars to see if their average weight is 6 ounces.


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paavo

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Reply #1 on: Jun 24, 2018
Answer to Question 1

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.

Answer to Question 2

Inferential; Descriptive; Inferential; Inferential; Descriptive


itsmyluck

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Reply 2 on: Jun 24, 2018
Excellent

upturnedfurball

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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