Historical data suggests a standard deviation in the first, Ask an Expert

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Is there a difference in the total scores for women's and men's basketball games? A random sample of n1=55 women's games had a mean winning score of 78. Another random sample of n2=60 men's games had a mean winning score of 90. Historical data suggests a standard deviation in the first sample of 10 and a standard deviation in the second sample of 16. Find a 95% confidence interval for the population difference.

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