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.
Answer:
2/3
Step-by-step explanation:
8+6=14
14/21=2/3
mark me brainliest please
Answer:
Step-by-step explanation:
6 dollars for a 12 pack means that it was $0.50 each. now they cost a dollar per pack. it's a 50 cent increase, or a 100% percentage increase
The answer is:
1st one is C
2nd one is A
(5x7)÷70-8
First solve inside the parentheses.
35÷70-8
Order of operations so do division next
35÷70 = 0.5
0.5 - 8 = -7.5