Z is a variable with mean 0 and variance 1.Z is a variable with mean 0 and variance 1.Z is a variable with mean 0 and variance 1.Z is a variable with mean 0 and variance 1.
0.25..? arithmetic mean...?
If you mean 1 x 0, that's 0, not infinity.
the mean is all of the numbers added up together, then that divided by the amount of numbers there is: 0+1+1+3+2+0+1= 8 Then: 8 divided by 7 = 1.142857143 ( 1.142 )
a = [1] Simple as that!! did you mean an identity matrix (I)? then a would equal: a= [ 1 0 0 0 1 0 0 0 1 ] All 1's down the main diagonal
anything to the 0-ith power is 1
if you mean 1+-1 then the answer is 0
Variance = sigma((value - mean)2) / (# values - 1) Mean = (0+1+1+2)/4 = 1 Variance = ((0-1)2+(1-1)2+(1-1)2+(2-1)2)/(4-1) Variance = (1+0+0+1)/3 Variance = 2/3 Variance ~ 0.667
1
If you mean: x+y = 1 then yes (0, 1) is a solution and the other is (1, 0) for the points of a straight line equation
4.5
If you mean: (3x-1)(x+1) = 0, then it is 3x squared+2x-1 = 0. Its solutions are: x = 1/3 or x = -1.