Question
The IQs of the population in South Africa are known to be normally distributed with a mean of 100 and a standard deviation of 16.
The IQs of the population in South Africa are known to be normally distributed with a mean of
100 and a standard deviation of 16. A group of 50 people living in a remote rural area in
KwaZulu-Natal are found to have an average IQ of 105. Test at a 5% level of significance if
this group is unusual.
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Elementary Algebra
Authors: Jerome E Kaufmann, Rosemary Karr, Karen L Schwitters, Marilyn Massey, R David Gustafson
10th Edition
1305161769, 9781305161764
