95% confidence interval for the mean IQ of college students aged 20-25 years old

Question

95% confidence interval for the mean IQ of college students aged 20-25 years old was computed as (103, 110), based on a sample of 130 observations of IQ. The correct interpretation of this interval is:

A)95% of individuals in the sample have IQs between 103 and 110.

B)95% of the individuals in the population should have IQs between 103 and 110.

C)There is a 95% probability that the future sample mean IQ will be between 103 and 110.

D)About 95% of future samples will have confidence intervals that contain the true mean.

Explanation / Answer

Answer: D

About 95% of future samples will have confidence intervals than contains the true mean. since confidence intervals says that the range of values that you can be hw much the percent of the true mean lies between the range.

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