Expected value and variance

[LostinMaths]

If i invited 50 people to go to a party, and they each had a 0.34 probability of actually going, what is the expected value and variance of them coming?

 

[Steven G]

I would think that 34% of the invited people will go.

To get help on this forum we need to know what you need help with. It would not be good if someone told you how to start this problem when you need help with finishing the problem. So please post back.

 

[HallsofIvy]

If i invited 50 people to go to a party, and they each had a 0.34 probability of actually going, what is the expected value and variance of them coming?

Wow, People really don't like you! What is 34% of 50? How are "expected value" and "variance" defined?