Answer:
P [ 40000 ≤ X ≤ 45000 ] = 0,02773 or 2,8 %
Step-by-step explanation:
P [ 40000 ≤ X ≤ 45000 ] = ?
To find the probablity P [ X ≤ 40000 ] = ?
z(s) = ( X - x ) / σ
z(s)= ( 40000 - 6000 )/ 8300
z(s) = -20000/8300
z(s) ≈ - 2,41
Then
from z-table we find P [ X ≤ 40000] = 0,00820
Now again:
For P [ X ≤ 45000 ]
z₂ = ( X - x ) / σ
z₂ = ( 45000 - 6000 ) / 8300
z₂ = - 15000 / 8300
z₂ = - 1,8072
z₂ ≈ 1,81
From z - table
For P [ X ≤ 45000 ] = 0,03593
Then:
P [ 40000 ≤ X ≤ 45000 ] = 0,03593 - 0,00820
P [ 40000 ≤ X ≤ 45000 ] = 0,02773 or 2,8 %
Answer:
the correct answer for k12 or study island would be
A.) Number of Problems: 15, 20, 22, 22, 22, 25, 28, 30, 35
i just took it and i did the wrong one and this was the correct answer that i have missed. :)
have a good day!
-chilly
I’m guessing it’s A because what u would have to do is multiply 9 by 3 and then 9 by x which would come to 9x + 27
A) every 50 students is 1 representative, so:
r = (a+b+c+d+e)/50
b) (1587 + 985 + 2052 + 824 + 752)/50 = 6200/50 = 124 representatives.
Our answer makes sense since for every representative, there are 50 students. And 50*124 = 6200 total students.
We know that
The Ohm's law formula states that
The resistor's current I in amps (A) is equal to the resistor's voltage V in volts (V) divided by the resistance R in ohms (Ω):
so
I=V/R
In some cases, Ohm's law uses the letter E<span> to represent voltage. </span>E<span> denotes electromotive force
</span>I=E/R
therefore
the answer is the option
C.) I = E/R