Noble told the official West Ham site: "I think the club, the chairman and the manager have done great business. The fans at West Ham demand big signings and they've got them this year.
"Chicharito is still probably one of the best finishers in world football. We all know the ability that Marko has got and he's come in and shown it straight away.
"Obviously we brought Joe in and he's England's number one, which was a big statement from us because we had two really good goalies... the calibre of signings we've made this year, I'm hoping can make a huge difference."
West Ham's next fixture is their Premier League opener at Manchester United on Sunday, August 13.