Multiple Choice
The scores of a certain population on the Wechsler Intelligence Scale for Children IV (WISC IV) are thought to be Normally distributed, with mean μ and standard deviation σ= 15. Bill is a child psychologist who obtains a simple random sample of 25 children from this population; each child is given the WISC IV. Suppose a histogram of the 25 WISC scores is the following:
Bill calculates a 95% confidence interval for μ and finds it to be (98.42, 110.20) . What should Bill conclude about the 95% confidence interval?
A) It is very reliable.
B) It is not very reliable.
C) It is actually a 99% confidence interval.
D) It is actually a 90% confidence interval.
Correct Answer:
Verified
Correct Answer:
Verified
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