Asked by harish
An intelligence test used in a particular country has scores which are normally distributed with mean 100 and standard deviation 15.In a randomly selected group of 500 people sitting the test, estimate how many have a score
1)higher than 140,
2)below 120,
3)between 100 and 110,
4)between 85 and 90.
1)higher than 140,
2)below 120,
3)between 100 and 110,
4)between 85 and 90.
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