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Hypothesis testing for mean

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A sample of 93 IQ scores was randomly selected from a certain population. At the 0.03 level of significance, test the hypothesis that the population has a mean IQ of 105. Assume that the population standard deviation is 11.9 and that the sample mean was 107 for the 93 scores.

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Solution Summary

The solution describes the steps in hypothesis testing for population mean based upon given sample mean and population standard deviation.

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Please see the attached file for complete solution. Work done with the help of equation writer may not print here.

Solution :

Sample Mean =
Population mean =

Ho: Population has a mean IQ score of ...

Solution provided by:
Lokesh Jain, MSc
Education
  • BEng (Hons) , Birla Institute of Technology and Science, India
  • MSc (Hons) , Birla Institute of Technology and Science, India
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