Answer Happy

The following 6 values, X1,X2,⋯X6X1,X2,⋯X6 are SAT
scores from a population for which the distribution
is N(μX,σ2)N(μX,σ2). Another
sample, Y1,Y2,⋯Y8Y1,Y2,⋯Y8 consisting of 8 observations,
has been selected from a distribution which
is N(μX,σ2)N(μX,σ2).
3. The following 6 values, X1, X2, X6 are SAT scores from a population for which the distribution is N (ux,o?). Another sample, Yı, Y2, Yg consisting of 8 observations, has been selected from a distribution which is N (ux,o2). Here are the values: X1= 620 X2= 680 X3= 700 X4= 600 XE= 819 Xe= 640 Y1= 688 Y2=710 Y3= 732 Y4= 636 Y5= 803 Yo= 741 Y7= 690 Yg=710 Compute a 99% confidence for uy – My.