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please help me. Exercise No. 5 t-TEST FOR INDEPENDENT SAMPLES 1. Do left-handed persons type slower than right-handed persons? The mean time to type an

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Exercise No. 5 t-TEST FOR INDEPENDENT SAMPLES 1. Do left-handed persons type slower than right-handed persons? The mean time to type an article for a random sample of 8 left-handed persons is 133.8 min with standard deviation of 14.7 min. While for a random sample of 11 right-handed persons, the mean time is 136.2 min with standard deviation equal to 15.0 min. Test the hypothesis at 5% level of significance

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