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The state test scores for 12 randomly selected high school seniors are shown on the...

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Statistics

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The state test scores for 12 randomly selected high school seniors are shown on the right Complete parts a through c below Assume the population is normally distributed a Find the sample mean x 908 8 Round to one decimal place as needed b Find the sample standard deviation S Round to one decimal place as needed 1420 695 723 622 1224 720 750 1447 980 840 540 945

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