Answer:
The answer is D
Step-by-step explanation:
Answer:
The sample size needed if the margin of error of the confidence interval is to be no more than 0.02.
n= 2015
Step-by-step explanation:
Given the customer relations department will survey a random sample of customers and compute a 95% confidence interval for the proportion that are dissatisfied
Given data from past studies, they believe that this proportion will be about 0.28
The proportion of success(p) = 0.28
We know that the margin of error of 95% of intervals of given proportion
margin of error = …(i)
Given margin of error = 0.02
Substitute values in equation (i) cross multiplication √n
0.02 √n = 2√0.28X0.72
On calculation, we get √n = 44.89
squaring on both sides, we get
n = 2015
Conclusion:-
The sample size needed if the margin of error of the confidence interval is to be no more than 0.02.
n= 2015
Answer:
closed questions are questions with fixed answer options
A. Closed questions allow the respondent to go in-depth with their answers.
B. It is possible to automate the collection of results for closed questions.
C. Closed questions allow for new solutions to be introduced.
D. It is easy to quantify and compare the results of surveys with closed questions.
Answer:
Step-by-step explanation:
Hello, first of all we can divide by 2.
The discriminant is negative so there is no real solutions.
Thank you.
Answer:
true. zero is an integer number
Step-by-step explanation:
Answer:
True, it is Known as a neutral integer Because it is neither negative or positive whole number
Step-by-step explanation:
Math math math math
Answer:
4000
Step-by-step explanation:
Find the radius;
20/2=10
Plug everything into the equation;
4/3 (3) (10)^3= 4000
Hope this helps:) Have a good day!
Answer:
4000
Step-by-step explanation:
hope this helps