Answer :
Not really. I suffer from extreme social anxiety so I am the opposite, being anxious around strangers and more comfortable around people I know. Some people may find being around people who don't know them well less anxiety-inducing because they don't feel forced to open up or show their sensitive side. Just my theory, so don't take my word if you think something else :)
Answer:
not at all
Explanation:
When your around a family member or someone you are close with you tend to get more anxiety sense they know much more about you. As to a stranger to don't know anything about them and they don't know anything about you, you feel a lot better when you make a mistake or do something embarrassing because you know you will never see them again.