9.Mr.Kim owns a gas station in Seoul.Hisbusiest hour is from

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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.

9.Mr.Kim owns a gas station in Seoul.Hisbusiest hour is from ''truck.soldier.in the wardrobe.hear from.the gas station.ac 英语翻译I stopped at a gas station about 50 miles from Oklahoma 英语翻译Mr King lives in a city.He owns some shops and makes a l in the wardrobe hearfrom the gas station Smoking is f_________ at the gas station. All the gas station is a smoking ban.和Smoking is banned at a It is half an hour is walk from here to the bus station I ____ a new drss.I ____ it in the shop near the gas station Is there a gas station around ___ i can get some petrol? Is there a gas station around ____ I can get some petrol?空格为英语翻译Kim Kyun Joong was born in Seoul,South Korea on 6 June 1