At a Kentucky Friend Chicken, a survey showed 2/3 of all people preferred skinless chicken over the regular chicken. If 2,400 pe
2 answers:
You might be interested in
Answer:
2.25
Step-by-step explanation:
.
Answer:
The sample size must be greater than or equal to 756
Step-by-step explanation:
The formula to calculate the error of the proportion is the following
where p is the proportion, n the sample size, E is the error and z is the z-score for a confidence level of 95%
For a confidence level of 95%
We know that for this case
We require that the error be 0.03 as maximum
Therefore we solve for the variable n
Answer:
z=6
Step-by-step explanation:
First you add -8 to both sides. Now the equation is =-3. Now you must multiply both sides by -2, so you get z=6