Answer:
439.32 (so 440)
Step-by-step explanation:
52% of people, and there are 846 people. what is 52% of 846? 439.32 and you round up.
Answer:
37.5%
Step-by-step explanation:
Answer:
P(x>278) is 0.16
Step-by-step explanation:
We are given that a normal distribution has a mean of 266 and a standard deviation of 12.
Mean = 
Standard deviation =
We are supposed to find P(x > 278)
So, Formula : 

Z=1
Refer the z table for p value
p value = 0.8413
P(x<278) is 0.84
P(x>278)=1-P(x<278)=1-0.84=0.16
Option A is true
Hence P(x>278) is 0.16
It represents the slope of a graph.. hope this helps