The following table represents the number of free throws a typical NBA player makes in three attempts.
Free Throws Made
0
1
2
3
Probability
0.2
0.3
0.3
What is the probability needed in order to make this a valid probability distribution?
1
0.3
0.1
0
None of the above
What is the mean of this distribution?
1.5
0.25
1.5
0.267
None of the above
What unit of measurement does the standard deviation have?
Square root of free throws
No unit of measurement
Free throws
Free throws squared
None of the above, as it depends on the situation