Answer:
The sample size required is 2500.
Step-by-step explanation:
z-score:
In function of the margin of error M, the z-score is given by:

In this question, we have that:

So






The sample size required is 2500.
Answer:
it's the 2nd one
Step-by-step explanation:
hoped I helped:)
Answer:
2. 7
Step-by-step explanation:
Answer:
between 2.8m and 2.9
Step-by-step explanation:
the real answer is 2.83, so between .8 and .9 is correct