Question

Independent simple random samples are taken to test the difference between the means of two populations whose standard deviations are not known. The sample sizes are n1= 25 and n2= 35. The correct distribution to use is the
a. Poisson distribution
b. tdistribution with 60 degrees of freedom
c. tdistribution with 59 degrees of freedom
d. tdistribution with 58 degrees of freedom

Answer

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