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A 1996 study identified 102 out of 852 men as left-handed vs 76 out of 839...

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A 1996 study identified 102 out of 852 men as left-handed vs 76out of 839 women as left handed. The same study also looked at thedifference in intelligence between right- and left-handed people.In particular, the average IQ of all right-handed persons in thesample (men and women) was x1 = 97.7, with a standard deviation ofs1 = 15.4, whereas the average IQ of all left-handed persons in thesample (men and women) was x2 = 100.3, with a standard deviation ofs1 = 17.6. (a) Set up a two-sided hypothesis test on a differenceof means and determine the p-value for this sample data. (b) Can itbe concluded that left-handed individuals are smarter thanright-handed individuals given a significance level of α = 0.05?(c) What is the smallest significance level α (rounded to thenearest hundredth) for which we may conclude that lefties aresmarter than righties?

Answer & Explanation Solved by verified expert
4.3 Ratings (922 Votes)
Total number of people 852 839 1691Number of left handed people 102 76 178Number of right handed people 1691 178    See Answer
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