Homework SourseAn urn contains 5 white and 5 black balls Balls are drawn on
An urn contains 5 white and 5 black balls. Balls are drawn one by one, whitout replacement, until five white ones have appeared. Let X be the number of draws necessary to find five white balls. What is the sample space of x?
An urn contains 5 white and 5 black balls. Balls are drawn one by one, whitout replacement, until five white ones have appeared. Let X be the number of draws necessary to find five white balls. What is the sample space of x?
Solution
To get 5 white balls, then you need to get at least 5 balls, and a maximum of 10 balls.
Thus, the sample space is
S = {5,6,7,8,9,10} [ANSWER]
