Phytagorean Theorem i think
11. 9/20
12. 13/20
13. 12/20
that's if it doesn't have to be in percentage form
Mu=80, sigma=39, X=85
Z=(X-mu)/sigma = 5/39=0.128=0.13
P(X<=85)= 0.5517 (from Z-table)
so, P(X>85)=1-0.5517=0.4483 approx. thats 44.8% probability.
Answer:
-53
/14
Step-by-step explanation:
None? Unless the second option is supposed to be 10^2 or the fourth option is 50 x 2.