Consider the following results for two samples randomly taken from two populatio
ID: 3046569 • Letter: C
Question
Consider the following results for two samples randomly taken from two populations.
What is the point estimate of the difference between two population means?
Select one:
A. -5
B. 45
C. 6
D. None of the above answers is correct
A statistics teacher wants to see if there is any difference in the abilities of students enrolled in statistics today and those enrolled five years ago. A sample of final examination scores from students enrolled today and from students enrolled five years ago was taken. You are given the following results.
The point estimate for the difference between the means of the two populations is
Select one:
A. 58.5
B. 9
C. -9
D. -6
Sample A Sample B Sample Size 11 15 Sample Mean 24 22 Sample Standard Deviation 5 6Explanation / Answer
Answer - 1: Point estimate for the difference = 24 - 22 = 2
None of the choices are correct. Option D
Answer - 2: Point estimate for the difference = 82 - 88 = -6
Option D is correct.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.