Answer:
My guess would be B
Step-by-step explanation:
Answer:

And i fwe look into the normalstandar dtable we can find the desired probability:

And then the The area to the right of z = 1.51 is 0.0655
Step-by-step explanation:
For this case we want to find the following probability:

And for this case we can use the normal standard distribution and the complement rule and we have this:

And i fwe look into the normalstandar dtable we can find the desired probability:

And then the The area to the right of z = 1.51 is 0.0655
Basically because you can break any square root of non-perfect square into the square root of prime factors.
Answer:
1 pair is $20. 3 pairs is $60. 4 pairs is $80. 5 pairs is $100. Please don't delete my answer, I am only trying to help.