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試卷名稱：110年 - 110 國立臺灣大學_碩士班招生考試_國家發展研究所甲、乙組：統計學（B）#100793
年份：110年
科目：統計學
4. In a large city, the percent of total spending that households devote to housing is
normally distributed, with mean u and standard deviation o= 9%. I select a
simple random sample of four young households and determine the percent of
their total spending that is devoted to housing. The four percentages are
33% 39% 32% 36%
Based on these data, a 99% confidence interval forμis
(A)35%±5.78%.
(B)35%±8.82%
(C)35%±11.59%
(D)35%±23.18%