I guess that u = μ & that a=σ. If so:
μ =100 & that σ =20 & x=20
Z score = (x-μ) / σ ==> Z score = (90-100)/20 ==> Z = - 0.5
Answer:
324
Step-by-step explanation:
Simplify it
Answer:
t=-6
Step-by-step explanation:
Answer:
75 + 25h
Step-by-step explanation:
Hope this helps