The scores of a certain population on the Wechsler Intelligence Scale for Children (WISC) are thought to be Normally distributed, with mean u and standard deviation o = 10. A simple random sample of 25 children from this population is taken and each is given the WISC. The mean of the 25 scores is i = 104.32. Based on these data, a 95% confidence interval for µ is: 104.32 + 3.29. O 104.32 ± 3.92. O 104.32 ± 0.78. O 104.32 ± 19.6.

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The scores of a certain population on the Wechsler Intelligence Scale for Children (WISC) are thought to be normally distributed, with mean \( \mu \) and standard deviation \( \sigma = 10 \). A simple random sample of 25 children from this population is taken, and each is given the WISC. The mean of the 25 scores is \( \bar{x} = 104.32 \). Based on these data, a 95% confidence interval for \( \mu \) is:

- \( 104.32 \pm 3.29 \).
- \( 104.32 \pm 3.92 \).
- \( 104.32 \pm 0.78 \).
- \( 104.32 \pm 19.6 \).
Transcribed Image Text:The scores of a certain population on the Wechsler Intelligence Scale for Children (WISC) are thought to be normally distributed, with mean \( \mu \) and standard deviation \( \sigma = 10 \). A simple random sample of 25 children from this population is taken, and each is given the WISC. The mean of the 25 scores is \( \bar{x} = 104.32 \). Based on these data, a 95% confidence interval for \( \mu \) is: - \( 104.32 \pm 3.29 \). - \( 104.32 \pm 3.92 \). - \( 104.32 \pm 0.78 \). - \( 104.32 \pm 19.6 \).
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