Question: Scores on an IQ test are normally distributed. A sample of25 IQ scores had standard deviation= s 8 .The developer of the test claims that

Scores on an IQ test are normally distributed. A sample of25

IQ scores had standard deviation=

s

8

.The developer of the test claims that the population standard deviation is greater than=

15

.Do these data provide sufficient evidence to support this claim? Use the=

0.05

level of significance.

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