Certainly the typical male vocal range, as with the typical male body language etc. Is associated more with serious/ has credibility/ etc than womens. And even between men, the taller men with the deeper voices command attention more easily.
It's probably a throwback ape thing tbh. Like how people get out of the way of my DH on the pavement without realising they're doing it. And I'm expected to give way. Because he's a great big fella and I'm a little woman.
It also reminds me of a ridiculous video we watched once about 'power poses'. Essentially if you make yourself larger and take up space you feel more powerful. ???. I'm little. I'm well aware of how things work with my space thanks. I'm never going to be a big gorilla. Hence I have other tools to command attention/ be seen as credible.
The best bit was when sitting in a chair, fill it. Legs wide arms wide etc. I said. Erm. Right off the bat, given that lots of women in our office wear skirts. I can see a bit of an issue here 