Answer:
its third one
Step-by-step explanation:
y= -2
-2=[3x(-5/3)+5]-2
0= -5+5
0=0
Answer:
7
Step-by-step explanation:
xy + (z-x)
x = 3
y = 2
z = 4
3×2 + (4-3)
6+1
= 7
The correct answer is 1/7

So a 30 year old professor would be 2.4 standard deviations less than the mean.