Suppose that IQ scores have a bell-shaped distribution with a mean of 100 and a standard...

Question

Question

Answer 1

Answer #1

Answer:

Mean = 100

SD = 15

Z = (70 - 100) / 15 = - 2

For Z = - 2, table value = 0.02275

Hence percentage of IQ score that are greater than 70 = (1 - 0.02275) * 100 =97.725%

Hence percentage of IQ score that are greater than 70 = 97.725%

Answer 2

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