The next four games will decide the relegation places.
West Ham
Norwich Away: West Ham win 3 points
Watford Home: West Ham draw 1 point
Manchester United Away: West Ham Lose 0 points
Aston Villa Home: West Ham win 3 points
Total of 38 points Safe in 16th place
Norwich City
West Ham home: Norwich loss 0 points
Chelsea away: Norwich loss o points
Burnley home: Norwich loss 0 points
Manchester United away: Norwich loss 0 points
Total of 21 points relegated in 20th place
Bournemouth
Leicester City home: Bournemouth draw 1 point
Man City away: Bournemouth loss 0 points
Southampton home: Bournemouth win 3 points
Everton away: Bournemouth draw 1 point
Total of 33 points relegated in 18th place on goal difference
Aston Villa
Palace home: Villa win 3 points
Everton away: Villa Draw 1 point
Arsenal home: Villa Loss 0 points
West Ham away: Villa Loss 0 points
Total of 31 points relegated in 19th position
Watford
Newcastle home: Watford Draw 1 point
West Ham away: Watford draw 1 point
Man City home: Watford loss 0 points
Arsenal away: Watford loss 0 points
Total of 33 points saved in 17th place on goal difference
Your math is incorrect. Bournemouth at present have 28 points. 5 more makes 33. And they have an inferior goal difference to Watford so assuming all results are correct in all probability Bournemouth and not Watford would be relegated sorry to be pedantic!
Now corrected, thanks for pointing that out