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anonymous

  • one year ago

IQ test scores have a normal distribution with a mean of 100 and a standard deviation of 15 approximately what proportion of people have an IQ between 85 and 115

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  1. Vocaloid
    • one year ago
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    85 and 115 are 1 standard deviation above and below the mean (100-15 = 85, 100+15 = 115) according to the empirical rule, this gives us a percentage of about 68%

  2. anonymous
    • one year ago
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    I turned it into a fraction and ended up with 17/25 The answers are a) 1/2 B) 2/3 C) 3/4 D) 4/5 Im lost *-*

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