18.5 you’d add 2.5 to 16 since 12.5 - 10 is 2.5 hope this helps
Lets first reduce 12/20....12/20 = 3/5
5/3 + 3/5 = 25/15 + 9/15 = 34/15 or 2 4/15
If you graph the points it comes out as a square, so the correct answers would be square, rectangle, parallelogram, and rhombus (a square can be these three but these shapes cannot be squares)
Answer:
![p_v =2* P(z>3.06)=0.0011](https://tex.z-dn.net/?f=p_v%20%3D2%2A%20P%28z%3E3.06%29%3D0.0011%20)
And since the p value is lower than the significance level we have enough evidence to reject the null hypothesia and the best option is:
C. 0.0011; reject the null hypothesis
Step-by-step explanation:
For this case we have the following system of hypothesis:
Null hypothesis : ![p=0.377](https://tex.z-dn.net/?f=%20p%3D0.377)
Alternative hypothesis: ![p \neq 0.377](https://tex.z-dn.net/?f=p%20%5Cneq%200.377)
In order to check this hypothesis we can use a z test for a proportion. The statistic is given by:
(1)
And the value for this case is ![z= 3.06](https://tex.z-dn.net/?f=%20z%3D%203.06)
We are conducting a bilateral test so then the p value can be founded on this way:
![p_v =2* P(z>3.06)=0.0011](https://tex.z-dn.net/?f=p_v%20%3D2%2A%20P%28z%3E3.06%29%3D0.0011%20)
And since the p value is lower than the significance level we have enough evidence to reject the null hypothesia and the best option is:
C. 0.0011; reject the null hypothesis