Use the Following Consider Taking Random Samples of Size 50 from Population a from Population

Multiple Choice

Use the following
Consider taking random samples of size 50 from Population A with mean 15 and standard deviation 3 and random samples of size 75 from Population B with mean 10 and standard deviation 5.
-How many degrees of freedom should be used when conducting inference for with samples of this size?

A) 49
B) 50
C) 74
D) 75