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1. Question 1 of 11 2. Check My Work 3. B eBook 4. O 5. O A simple random sample of 30 items resulted in

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1. Question 1 of 11 2. Check My Work 3. B eBook 4. O 5. O A simple random sample of 30 items resulted in a sample mean of 20. The population standard deviation is o 6. Round your answers to two decimal places. a. What is the standard error of the mean, oy? 6. 7. b. At 95% confidence, what is the margin of error? 8. 9. 1

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