The thing is we don't have to "consider" anything. Common sense dictates null hypothesis to be "new device equals what's already on market". It's not? Great. P

The thing is we don't have to "consider" anything. Common sense dictates null hypothesis to be "new device equals what's already on market". It's not? Great. Prove it. (This logic may not always hold, but surely it does for test-and-measurement devices)