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수학동아 - 폴리매스
함께 풀고 싶은 문제
나도 수학쌤 문장제 문제를 변형해 문제를 내는 곳입니다.
[문장제 문제&개념응용] 도보[확률과 통계][난이도 000]
잭과콩나물
2021.03.07 01:50
조회 409
어느 도시의 직장인들이 하루 동안 도보로 이동한 거리는 평균이 mkm, 표준편차가 nkm인 정규분포를 따른다고 한다.
이 도시의 직장인들 중에서 거리의 총합은 216km이었다. 이 결과를 이용하여, 이 도시의 직장인들이 하루 동안 도보로 이동한 거리의 평균 m에 대한 신뢰도 95%의 신뢰구간을 구하면 ‘
‘이다.
100(a+n)의 값은? (단, z가 표준정규분포를 따르는 확률변수일 때, p(lzl
1.96)=0.95로 계산한다)
(사진 출처:브런치)(확통 1개월차 기념문제 2)
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