The Tests for an Argument to Be Good

In chapter 3 of Epstein, according to the text, in order for any argument to be a good argument it must pass three tests. An argument that does not pass any of these tests will be consider as a bad argument. The first test is for the premise to be plausible. In other words, the argument must have a good reason or believable. For the second test, the premise of the argument must be more plausible than the conclusion. Meaning that the argument must be more believable than the conclusion; the conclusion can be false.  Lastly, in the third test, the argument must be valid or strong.
Example: The great white is a type of shark. Great white sharks are carnivores. All sharks are carnivores.
This is an example of an argument because two of the premise is true while the conclusion might be false. The two premise is common knowledge because everyone knows that great white sharks is a type of shark and  eats other animals. The conclusion is might be false because not all types of sharks are carnivores.