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A random sample of 23 wolf litters in Ontario, Canada, gave an average of x1= 4.2...

A random sample of 23 wolf litters in Ontario, Canada, gave an average of x1= 4.2 wolf pups per litter, with estimated sample standard deviation s1= 1.5. Another random sample of 10 wolf litters in Finland gave an average of x2=2.6 wolf pups per litter, with sample standard deviation s2= 0.8.

(b) Find a 99% confidence interval for u1-u2, the difference in population mean litter size between Ontario and Finland.
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