Point estimate for the difference between two population proportions is the difference between the two sample proportions, written as:

and the standard deviation is given by

When np and n(1-p) is greater than 5, then the sampling distribution is approximately normal and we can use standard normal methods.
Thus, the propability of a test <span>for the difference between two population proportions is given by

</span>
Answer:
The system of equations has no solution.
Step-by-step explanation:
Given the system of equations
2y = 2x+7
x = y+2
solving the system of equations

Arrange equation variables for elimination

Multiply -y+x=2 by 2: -2y+2x=4

so adding




so the system of equations becomes

0 = 11 is false, therefore the system of equations has no solution.
Thus,
No Solution!
Answer:
b. No x-intercept y-intercept is (0, -8)
Hey there!
Let's take a look at this problem... Okay so for these questions there is formula known as the point-slope formula that is used...
(y - y₁) = m(x - x₁)
From here on out you substitute in your given values...
(y + 3) = -6(x + 2)
y + 3 = -6x -12
<u>y = -6x -15</u><u /> <----- That's your answer!
I hope this helped you!
<u>Please vote me for Brainliest if there is a second answer!</u><u /> ^__^