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Q 4 : A principal at a certain school claims that the students in his school are above average intelligence. A random sample of thirty

4

: A principal at a certain school claims that the students in his school are above average intelligence.

A random sample of thirty students IQ scores have a mean score of

98 .

Is there sufficient evidence to

support the principal's claim? The mean population IQ is

100

with a standard deviation of

15 .

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