In

the given graph, how many intermediate vertices are required to travel from

node a to node e at a minimum cost?

Let G be an undirected connected graph with distinct edge weight. Let emax be the edge with maximum weight and emin the edge with minimum weight. Which of the following statements is false?

An experiment was performed to compare the abrasive wear of two different laminated materials. Twelve pieces of material 1 were tested by exposing each piece to

a machine measuring wear. Ten pieces of material 2 were similarly tested. In each

case, the depth of wear was observed. The samples of material 1 gave an average

(coded) wear of 85 units with a sample standard deviation of 4, while the samples

of material 2 gave an average of 81 with a sample standard deviation of 5. how many degree of freedom