Answer:
7/9 = 42/n.
7n = 378,
n = 54.
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
We calculate the z-score for each
Mathematically;
z-score = (x-mean)/SD
z1 = (1.9-2.1)/0.2 = -1
z2 = (2.3-2.1)/0.2 = 1
So the proportion we want to calculate is;
P(-1<x<1)
We use the standard score table for this ;
P(-1<x<1) = P(x<1) -P(x<-1) = 0.68269 which is approximately 68%
Answer:
X=-3.0000067399190957
Y=-3.999994945051806
Step-by-step explanation:
Answer:
for part A its C and for B its 2
Step-by-step explanation:
The total is 28 and there is 13 points total so you have to do 28/13