Answer:
We must survey at least 48 people from this younger age group.
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:
90% confidence level
So , z is the value of Z that has a pvalue of , so .
How many of this younger age group must we survey in order to estimate the proportion of non-grads to within .10 with 90% confidence? Use the value of p from the over-50 age group.
This is n when
So
Rouding up,
We must survey at least 48 people from this younger age group.
The Answers is 15 if you look it up you will get<span> Answers.</span>
Answer:
1 hour and 30 maybe my math might be wrong
Step-by-step explanation: