Just like testing an argument we have to put our strong or valid statement through three tests. These are very similar to testing an argument, the tests consist of finding a good reason to believe the premises, it must be a valid or strong statement, and the premises has to be more plausible than its conclusion. There are a few key points that will not matter when deciding whether a an argument is strong or valid and they are whether the premises are true, if we know the premises are true, and if the person making the statement thinks it is valid or strong. There are some key words that you may use in your statement such as "maybe" and "really" that give the reader an idea of how the speaker feels about the argument.
An example of a Strong statement is "All San Jose City police cars that I have seen or anyone else I know has seen are white and blue. Therefore all San Jose City police cars are white and blue." This is an example of a strong argument because the premises is true and we know it is true as well as I believe it is a strong argument. Now an example of a valid argument would be "San Jose City cop cars are only blue and white. Therefore, all San Jose city police cars are blue and white." Even though both if these statements say pretty much the same thing one gives a stringer statement than the other.
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I find it extremely helpful how you used relatively the same statement for both examples. Because the statements say just about the same thing, I find it easier to point out the differences between a valid and a strong argument. After understanding the difference, one can clearly see that there is clearly a possibility for the conclusion in the first statement to be false, based on the premises, and in the second statement, both the premises and conclusion have to be true. I also like how you pointed out those key words of "maybe" and "really" to put some intent behind the statements, so that one would know the speakers' beliefs and opinions.
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