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18 19 20 21 22 23 24 25 26 27 28 29 SAT Scores Estimate the variance in mean mathematics SAT scores by state, using

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18 19 20 21 22 23 24 25 26 27 28 29 SAT Scores Estimate the variance in mean mathematics SAT scores by state, using the randomly selected scores listed below. Estimate with 90% confidence. Assume the variable is normally distributed. Use a graphing calculator and round the answers to one decimal place. 502 211 209 499 565 469 543 572 550 500 Send data to Excel

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