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Please show work D Question 12 4 pts The test scores of 40 students are summarized in the frequency distribution below. Find the standard deviation

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Please show work

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D Question 12 4 pts The test scores of 40 students are summarized in the frequency distribution below. Find the standard deviation of the score. Show calculator function and inputs clearly to get credit. Scores Frequency 50-59 5 60-69 12 70-79 5 60-89 4 90-99 9

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