Yes cause the tree is the only and best way to do it
Answer:
x = 0 or x = 7
Step-by-step explanation:
I have showed all steps on the image, if you have any other questions you can ask.
Your answer should be B !
Let p be 0.831 denote the percentage of defective welds and q be 0.169 denote the percentage of non-defective welds.
Using the binomial distribution, we want all three to be defective.

