
12장 한 모집단에 관한 추론 퀴즈
Authored by 재영 허
Mathematics
12th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
신문용지 재활용 공장의 재무분석가는 주간 평균 신문용지량이 얼마를 초과해야 이윤이 발생할 것이라고 계산했는가?
3.0파운드
2.5파운드
2.0파운드
1.5파운드
Answer explanation
주간 평균 신문용지량이 2.0파운드를 초과해야 이윤이 발생한다고 계산했다.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
신문용지 재활용 공장의 가구당 버려지는 주간 신문용지량의 모평균에 대한 가설검정에서 검정통계량은 어떻게 계산되는가?
𝜒2=𝑛−1𝑠2𝜎2
𝐿𝐶𝐿=𝑛−1𝑠2𝜒𝛼/22
𝑥±𝑡𝛼/2,𝜈𝑠𝑛
𝑡=𝑥−𝜇𝑠/𝑛
Answer explanation
The t-statistic is calculated as t = (x - μ) / (s / √n) in hypothesis testing for the mean of a population.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
세금환불 건으로부터의 추가 세금수입에서 95% 신뢰구간을 추정할 때 사용된 유의수준은 얼마인가?
1%
5%
10%
20%
Answer explanation
추정된 95% 신뢰구간에서 사용된 유의수준은 5%이다. 따라서 올바른 선택은 5%이다.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
용기에 액체를 채우는 기계의 일관성에 대한 검정에서 가설 설정은 어떻게 되었는가?
H0: μ = 2.0 VS H1: μ > 2.0
H0: σ2 = 1 VS H1: σ2 < 1
H0: μ = 2.0 VS H1: μ ≠ 2.0
H0: σ2 = 1 VS H1: σ2 > 1
Answer explanation
The correct hypothesis testing setup for consistency in filling liquid into containers involves H0: σ2 = 1 and H1: σ2 < 1, where σ2 represents the variance.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
용기에 채워진 액체의 양의 모분산에 대한 검정에서 검정통계량은 어떻게 계산되는가?
𝜒2=𝑛−1𝑠2𝜎2
𝑡=𝑥−𝜇𝑠/𝑛
𝑥±𝑡𝛼/2,𝜈𝑠𝑛
𝐿𝐶𝐿=𝑛−1𝑠2𝜒𝛼/22
Answer explanation
The test statistic for the test of the variance of a liquid filled in a container is calculated as 𝜒2=𝑛−1𝑠2𝜎2.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
표본비율의 계산에서 성공의 횟수는 몇 번인가?
1.77
532
407
765
Answer explanation
표본비율의 계산에서 성공의 횟수는 407번입니다.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
모비율에 대한 추정치를 사전에 알 수 없기 때문에 일반적으로 표본크기를 가장 크게 만드는 방법은?
방법 3
방법 2
방법 1
방법 4
Answer explanation
To maximize sample size when the estimate of the margin of error is unknown, the best method is Method 1.
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