Mathematics, 07.01.2021 17:30 leenzazou587

Pennies made prior to 1982 were made of 95% copper. Because of their copper content, these pennies are worth about $0.023 each. Pennies made after 1982 are only 2.5% copper. Jenna reads online that 13.2% of pennies in circulation are pre-1982 copper pennies. Jenna has a large container of pennies at home. She selects a random sample of 50 pennies from the container and finds that 11 are pre-1982 copper pennies. Does this provide convincing evidence that the proportion of pennies in her containers that are pre-1982 copper pennies is greater than 0.132

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Pennies made prior to 1982 were made of 95% copper. Because of their copper content, these pennies a...

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