A sample of 23 Menso members have had their Intelligence Quotients (IQs) measure

Question

A sample of 23 Menso members have had their Intelligence Quotients (IQs) measured and recorded. The data were used to calculate a 94% confidence interval for the mean IQ of all Menso members. The confidence interval was calculated as 135 ± 13. According to this confidence interval, it is most reasonable to conclude that: 94% of all Menso members have an IQ between 122 and 148 O the mean IQ of all Menso members is between 122 and 148 O you are 94% confident the interval between 122 and 148 contains the mean IQ of all Menso members there is a 94% chance that the mean IQ of all Menso members is between 122 and 148

Explanation / Answer

n = 23

94% CI is given by a (135+/-13)

Which means that Option C, is the right interpretation

CI are always interpreted as "We are 94% confident that the interval between 122 and 148 contains the mean of IQ of all Menso members"

3rd option is correct

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