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the weights of egge produced on a farm are normally distribu

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the weights of egge produced on a farm are normally distributed with a mean of 1.4 ounces and a standard deviation of 0.4 ounces
1.what percent of the eggs weight at least 1 ounce?
2.how many of 1200 eggs are withiin 2 standard deviations of the mean?
3.to be a graded extra large,an egg must weight at least 2.2 ounces.what is the probability that an egg from this form will be graded extra large?
1、84.13%
2、0.6826×1200=819.12≈819个
3、0.0228
the weights of egge produced on a farm are normally distribu The old men work on a farm,they are ( )(farm) You can see a lake on the farm.There are all kinds of (12)f_ the children are on __________ on a farm. They picked a lot of oranges on the farm.对on the farm提问 模板：( sam liues on a farm.there are many animals on the farm,horse There were a lot of oranges on the farm there are lots of sheep on the farm划线部分：lots of sheep There are a little sheep on the farm,-------?A.are there B.a There are fifteen rabbits on the farm. --are these any ____ on the farm? Are there any pandas on the farm?