You have to calculate the probability for the given average:
= 3/200 = 0.015 = 1.5%
For 50,000 phones you have to multiply the probability by 50,000:
0.015*50,000 = 750 phone defectives if the company produced 50,000
Well to set up a substitution equation, you need to make sure you have something you can sub in that's identical in both equations.
we have
3x-y=5
x-4y=-24
what's in common? x and y.
take one of the equations and solve for x or y like so (i'm doing y)
3x-5=y
then substitute the whole 3x-5 equation for y in the second equation. it is quite similar to how you would normally substitute a number like if y=5, then you substitute 5 for y in the second equation, but instead the "5" is an equation "3x-5"
x-4y=-24
x-4(3x-5) = -24
Now that you got it set up, you just need to solve for x and once you got x value, plug the x value in the original equations to find y.
-x = 2 - 3x + 3
Combine like terms 2 and 3 on the right side.
-x = (2 + 3) - 3x
-x = 5 - 3x
Add 3x to both sides (-3x and 3x on the right side cancel).
-x + 3x = 5
2x = 5
Divide by 2 on both sides (This cancels out the 2 in the 2x).
(2x)/2 = 5/2
x = 5/2
Thus, x is equal to 5/2.
That would probably be strong negative correlation, however i can't be sure because i can't really see the graph
Answer:
5/2
Step-by-step explanation:
Negative slopes go left to right downwards if I remember correctly