hi! I am very curious. If fed raises interest rates on 28/10/2015 what would happen to the ons?
Would it go up or down?
Here are some articles to get you started with your research:
The incredible gold-interest rate correlation - MarketWatch
https://www.caseyresearch.com/articles/what-youve-heard-about-gold-and-interest-rates-is-dead-wrong
In theory, gold’s price should drop (since high interest rates in USD will be an incentive to buy it, hence people will move away from gold into USD). Again, in theory.
There is no good reason for FED to increased the interest rates.
Not sure but generally if USD raise, gold must drop. In other words, you need to sell something to buy USD 
As previously stated, I don’t really see the FED increasing their interest rates… but your postulations seem plausible in theory.
Check this out:
Market all anticipate for FED raise decision so it could not cause impacts on usd-pairs.