Determine whether the following results appear to have

Last updated: 12/14/2023

Determine whether the following results appear to have statistical significance and also determine whether the results have practical significance Most people have IQ scores between 70 and 130 For approximately 39 99 you can purchase a PC or Mac program from HighlQPro that is claimed tox increase your IQ score by 10 to 20 points The program claims to be the only proven IQ increasing software in the brain training market but researchers could find no substantial data supporting that claim so suppose that in a study of 13 subjects using the program the average increase in 10 score is 14 IQ points There is a 2 chance of getting such results if the program has no effect Does the IQ increasing software have statistical significance A No the software is not statistically significant because the results are likely to occur by chance B Yes the software is statistically significant because the results are likely to occur by chance C No the software is not statistically significant because the results are unlikely to occur by chance O D Yes the software is statistically significant because the results are unlikely to occur by chance Does the IQ increasing software have practical significance A No the software is not practically significant because the number of IQ points gained is very small OB Yes the software is practically significant because the results are too unlikely to occur by chance C Yes the software is practically significant because the number of IQ points gained is large enough to be considered practically significant