Answer:
-13
Step-by-step explanation:
x+3=-10
x+3-3=-10-3
x=-10-3
x=-13
Answer:
For me
Step-by-step explanation:
50 minutes to seconds=50×60=3000
18 minutes remains the same
3000+18=3018
3018/7200×100
301800/7200
41.917
Answer:
c.
Step-by-step explanation:
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