Activity Z has estimates a = 5,b = 10,m = 7;activity X has estimates a = 4,b = 11,m = 6;and activity Y has estimates a = 3,b = 12,m = 8.Which of the following statements is best?
A)Activity X is longer than Activity Y.
B)Activity X has a higher standard deviation than Activity Z.
C)Activity Z is shorter than Activity Y.
D)Activity Y has a smaller variance than Activity Z.

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The Answer of Activity Z has estimates a = 5,b = 10,m = 7;activity X has estimates a = 4,b = 11,m = 6;and activity Y has estimates a = 3,b = 12,m = 8.Which of the following statements is best?
A)Activity X is longer than Activity Y.
B)Activity X has a higher standard deviation than Activity Z.
C)Activity Z is shorter than Activity Y.
D)Activity Y has a smaller variance than Activity Z.

Activity Z Has Estimates a = 5,b = 10,m =