Answer:
b) 25
c)14
Step-by-step explanation:
Answer:
0.40517 is the probability
Step-by-step explanation:
The first thing to do here is to calculate the corresponding z-score
Mathematically;
z-score = x-mean/SD
from the question,
x = 78, mean = 75 and SD = 12.5
Plugging these values in the z-score equation, we have;
z-score = (78-75)/12.5 = 3/12.5 = 0.24
So the probability we want to calculate is that;
P(z < 0.24)
we can get this by using the standard normal distribution table,
The value according to the table is;
0.40517
I'm assuming that the options are after the .......
So, it looks like to me that each number is multiplying by 2.
So, -4*2= -8
-8 would be the best answer.
I hope this helps!
~cupcake
Answer:
$1.95
Step-by-step explanation: