Seth asked a random sample of 20 students how much cash they had in their pocket. The following frequency table gives the responses. cash($) freq 1 2 5 20 9. 44 1 985 1 Find the standard deviation. Give your answer to at least 2 decimal places

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A: Let J is x km away from point C. So JD=6-x

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Q: ho thats only #8 i need help with all

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Q: thank you! could you show me how to do d

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A: