Has there been any quantitative, non-anecdotal Scrabble research done?

I’m wondering about likelihoods of winning with the following situations:

1) What percentage of players win when they put down a 7-letter Bingo? Does it matter if the bingo is early or late in the game?

2) Does passing a turn improve or worsen the likelihood of winning?

3) Do players who have a preponderance of consonants tend to win more than those who have more vowels?

4) Percentage wise – do you stand a better chance of winning if the first word is placed horizontally or vertically?

And so on.

Does that sort of research exist?