9.Mr.Kim owns a gas station in Seoul.Hisbusiest hour is from 11 to noon.On May 5th,Mr.Kim’sdaughter surveyed 36 customers.She foundthat the 36 people bought average of 12 gallons ofgasoline with a standard deviation of 4gallons.Find a point estimat
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9.Mr.Kim owns a gas station in Seoul.Hisbusiest hour is from 11 to noon.On May 5th,Mr.Kim’s
daughter surveyed 36 customers.She foundthat the 36 people bought average of 12 gallons of
gasoline with a standard deviation of 4gallons.
Find a point estimate for μ,the meannumber of gallons of gas people buy?
Establish a .95 confidence interval for
Establish a .99 confidence interval for
中英文回答皆可,
均值μ与样本的均值一致,为12加仑.μ的标准差为4/(36^0.5)=2/3,所以95%的置信区间为12+(-)(2/3)*1.96;99%的置信区间为12+(-)(2/3)*2.576.
12
(12-4, 12+4)
(12-8, 12+8)
9.Mr.Kim owns a gas station in Seoul.Hisbusiest hour is from 11 to noon.On May 5th,Mr.Kim’sdaughter surveyed 36 customers.She foundthat the 36 people bought average of 12 gallons ofgasoline with a standard deviation of 4gallons.Find a point estimat
My friend,Mr.Kim,is a policeman.His dog helps him catch criminals.英文翻译中文.
mr smith owns a larger collection of coinsthan anyone else i have ever met .为什么用a加比较级
He owns a nice computer.
英语填空mr.smith owns collection of coins than anyone else i have ever met.A.larger B.a larger C.the largest D.a large
Kim
He owns a house的同义句
His father owns a famous restaurant.译文
同义句 He owns a nice computer
That the world owns no man a living,but that it owns every
gas
gas
3.(2005山东卷)28.Mr.Smith owns ______ collection of coins than anyone else I have ever met.A.larger B.a larger C.the larger D.a large
用英文翻译句子:Mr li owns the supermarket in the town
用英文解释句子:Mr li owns the supermarket in the town
exergy of a gas turbine
回答:Is Kim a big boy?______________________.
Is Kim a big boy?越快越好