Answer:
Final answer is
and
.
Step-by-step explanation:
Given equation is 
Now we need to find the solution of
in given interval
.




which gives
and
in the given interval.
Hence final answer is
and
.
The answers are:
• A
• C
• E
It would be 1444
hope this helps
You do 48 divided by 2 so that you can put in your answer. any other questions ask me
Answer:
We need a sample size of at least 369.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence level of
, we have the following confidence interval of proportions.

In which
z is the zscore that has a pvalue of
.
The margin of error is:

For this problem, we have that:

90% confidence level
So
, z is the value of Z that has a pvalue of
, so
.
How large of a sample size is required?
We need a sample size of at least n.
n is found when
. So






Rounding up
We need a sample size of at least 369.