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4. A researcher is interested in opinions on Ted Cruz. She asks 1,500 respondents to rate his performance on a scale from 1 (Extremely poor)

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4. A researcher is interested in opinions on Ted Cruz. She asks 1,500 respondents to rate his performance on a scale from 1 (Extremely poor) to 7 (Extremely good). Her sample mean is 2.6 and her standard deviation is 1.5. Based on the information she has obtained from her sample. she can be 95% confident that the true population mean falls within what range

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