Answer:
The first graph, answer choice A.
Step-by-step explanation:
Answer: 6
Step-by-step explanation: First you need to set both denominators equal. To do that you multiply 4 by 2 to get 8. Then you have to multiply the numerator by 2, so 2 times 3 equals 6.
Answer:
$14
Step-by-step explanation:
Make the variables:
x
x + 3
2x + 3 = 25
2x = 22
x = 11
11, 14
Answer:
Option B) Reject null hypothesis
Step-by-step explanation:
We are given the following in the question:
We are given the null hypothesis:



Two tailed z-test
Now, 
Since,
The calculated z-statistic does not lie in the acceptance region, we fail to accept and reject the null hypothesis.
Left-tailed z-test
Now, 
Since,

We fail to accept and reject the null hypothesis.
Right-tailed z-test
Now, 
Since,

We fail to accept and reject the null hypothesis.