Frazier Klein
07/10/2024 · Elementary School

전구를 만드는 A 공장에서 400 개의 전구를 임의로 추출하여 전구의 수명을 조사한 결과 평균이 500 시간이고 표준편차가 40 시간이었을 때, 이 공장 전구의 평균 수명 \( m \) 에 대한 신뢰도 \( 95 \% \) 의 신뢰구간을 구하여라.

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신뢰구간은 \( (496.08, 503.92) \) 시간입니다.

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