Question: Hi can someone help me solve this equation and explain it to me step by step please. The values are: X?1= 21.162 X?2= 20.955 S2

Hi can someone help me solve this equation and explain it to me step by step please.

The values are:

X?1= 21.162

X?2= 20.955

S2 1= 24.261

S2 2= 19.198

cov= 21.2761158

n= 20

Hi can someone help me solve this equation and explain it to

X1+ X 2 N S S NN 2 * cov n

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