- #1
Mdhiggenz
- 327
- 1
Homework Statement
Of all the weld failures in a certain assembly, 85%
of them occur in the weld metal itself, and the remaining
15% occur in the base metal. A sample of
20 weld failures is examined.
a. What is the probability that fewer than four of
them are base metal failures?
Is there a faster way to solve rather than doing p(x=0)+p(x=1)+p(x=2)+p(x=3)?
Thanks
Brandon