Answer:
y = 2x-3
Step-by-step explanation:
y – 1 = 2(x – 2)
Distribute
y-1 =2x-4
Add 1 to each side
y-1+1 = 2x-4+1
y = 2x-3
Answer:
The test statistic Z = 3.125
Step-by-step explanation:
<em>Given Population proportion P = 0.25</em>
<em>Given sample size 'n' = 696</em>
<em>Sample proportion 'p⁻' = 0.30</em>
Test statistic
![Z = \frac{p^{-} -P}{\sqrt{\frac{P Q}{n} } }](https://tex.z-dn.net/?f=Z%20%3D%20%5Cfrac%7Bp%5E%7B-%7D%20%20-P%7D%7B%5Csqrt%7B%5Cfrac%7BP%20Q%7D%7Bn%7D%20%7D%20%7D)
![Z = \frac{0.30-0.25}{\sqrt{\frac{0.25 X 0.75}{696} } } = 3.125](https://tex.z-dn.net/?f=Z%20%3D%20%5Cfrac%7B0.30-0.25%7D%7B%5Csqrt%7B%5Cfrac%7B0.25%20X%200.75%7D%7B696%7D%20%7D%20%7D%20%20%3D%203.125)
<u><em>Final answer</em></u>:-
The test statistic Z = 3.125
There are 31+42+50+61=184 total females, and 50+61=111 females in grades 11 and 12, so the percentage is 111/184*100=60.33 percent, which can be rounded to 60%.
-30 is the answer to your problem.