→ yhliu:μ 之 98% CI 的誤差設定為 0.25. 已知 n=32 時一個樣本得 11/03 08:37
→ yhliu:s=1.723. 問: 需多大樣本才能符合上述要求? 11/03 08:38
→ Qaz168:好 謝謝 11/03 23:02
A quality engineer wanted to be 98% confident that the maximum error
of the estimate of the mean strength, μ, of the left hinge on a vanity
cover molded by a machine is 0.25. A preliminary sample of size n=32
_
parts yielded a sample mean of x=35.68 and a standard deviation of
s=1.723
How large a sample is required ?
請問題目是什麼意思??
of the left hinge on a vanity cover molded by a machine is 0.25.
這句實在不懂
謝謝~
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※ 編輯: Qaz168 來自: 219.70.177.235 (11/02 01:37)
※ 編輯: Qaz168 來自: 219.70.177.235 (11/02 02:09)