Answer:
1.C
2. A
Step-by-step explanation:
Answer:
It is open.
Step-by-step explanation:
Open inequalities entail signs like
, while closed inequalities entail signs like
instead.
Answer:
We are given:

is the critical value at 0.02 significance level
is the margin of error
Therefore, the required sample size is:




Therefore, the required sample size n = 1061
Answer: it has a 20% increase
Answer:
2
Step-by-step explanation: