The Scores on the Wechsler Intelligence Scale for Children (WISC)are

question 53

Multiple Choice

The scores on the Wechsler Intelligence Scale for Children (WISC) are thought to be Normally distributed with a standard deviation of  = 10.A simple random sample of 25 children is taken,and each is given the WISC.The mean of the 25 scores is = 104.32.Based on these data,what is a 95% confidence interval for ?

• A)104.32 ± 0.78
• B)104.32 ± 3.29
• C)104.32 ± 3.92
• D)104.32 ± 19.60

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