The answer is rational, because this number can be written as a over b
Falls to the left and rises to the right
Answer: Answer:The solution to the given system of equations is (2.8,0.1)
Step-by-step explanation: I got it correct on the Unit Test
Answer:
-7
Step-by-step explanation:
Answer:
The sample size required is 228.
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 z-score that has a p-value of .
The margin of error is of:
90% confidence level
So , z is the value of Z that has a p-value of , so .
In previous years, the proportion has been 0.16.
This means that
Obtain a sample size that will ensure a margin of error of at most 0.04 for a 90% confidence interval.
This is n for which M = 0.04. So
Rounding up:
The sample size required is 228.