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at the end of a course the same test was given to 100 mal and 144 female trainees. the mean score for the males was

at the end of a course the same test was given to 100 mal and 144 female trainees. the mean score for the males was 27.53 and the mean score for the females was 26.81. assuming a common population standart deviation of 3.48 use a 99% confidence interval to see whether the groups performed differently

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