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Business statistics QUESTION 7 Your Marketing Manager has industry sample data for 100 months of advertising spending. She asks you to estimate the mean industry

Business statistics

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QUESTION 7 Your Marketing Manager has industry sample data for 100 months of advertising spending. She asks you to estimate the mean industry advertising spending with a 90% confidence level. Use a mean of 50 and the standard deviation is 10. Provide the upper confidence interval? QUESTION 8

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