Question: c) Find Upper E left parenthesis Upper X plus Upper Y right parenthesis and SD left parenthesis Upper X plus Upper Y right parenthesis. Upper

c) Find Upper E left parenthesis Upper X plus Upper Y right parenthesis and SD left parenthesis Upper X plus Upper Y right parenthesis. Upper E left parenthesis Upper X plus Upper Y right parenthesis equals 213 (Simplify your answer. Do not include the $ symbol in your answer.) Part 6 SD left parenthesis Upper X plus Upper Y right parenthesis equals enter your response here (Round to two decimal places as needed. Do not include the $ symbol in your answer.)

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