Answer:
He is expected to make 21 more free throws
Explanation:
we know that the probability for the best player is 8/10 or 80%
the probability for the second best is 13/20. This is equivalent to 65%
They each attempt 140 free throws.
We need to figure out what 80% of 140 is. To do this, we need to multiply 140 by 0.80. 140 * 0.80 = 112
We do the same for the second best
140 * 0.65 = 91
112 - 91 = 21.
Hope this helped