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4. The banking industry has suffered in recent years because of a high default rate on energy-related loans. How large a sample must you take

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4. The banking industry has suffered in recent years because of a high default rate on energy-related loans. How large a sample must you take from banking records to be 98% confident that your estimate for the amount of these defaults is within $1,000 of the true mean loan amount? The standard deviation is $10,000. a. 567. b. 233. C. 240. d. 543. e. 890

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