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  3. 1. suppose it is known that the iq scores of a cer

1. Suppose it is known that the IQ scores of a certain population of adults are...

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Basic Math

1. Suppose it is known that the IQ scores of a certainpopulation of adults are approxi- mately normally distributed witha standard deviation of 15. A simple random sample of 25 adultsdrawn from this population had a mean IQ score of 105.

a) Would we be able to reject Ho if we were to test it at 1%significance level? Explain.

b)Construct and interpret the 95% confidence interval forpopulation average IQ from these data.

c)Based on the 95% CI, is there evidence at 5% significancelevel that the average IQ in this population is not equal to 100?Explain.

Answer & Explanation Solved by verified expert
3.9 Ratings (402 Votes)
abInterpretation We are 95 confident that thepopulation mean    See Answer
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