Recent content by bunnyrabid

Homework Statement Given a 30% failure rate, what is the mean number of students who fail, and what is the variance? There are 8 students in the course. Homework Equations I think these are the correct equations: Mean = Probability * Number of students Variance = Sum from i=1 to 8 of...

Homework Statement The pilot of a rocket wants to reach a star in 1 year. The rocket is currently on Earth. The star is 4 light years away, measured from an observer on Earth. What velocity is needed for the pilot to reach the star in a year in the pilot's/rocket's time? Homework Equations...