Home / Questions / Youre told that among all 18 sections of BUQU 1230 the average score on the first midterm ...
You're told that among all 18 sections of BUQU 1230 the average score on the first midterm is 66 and the standard deviation is 15. Answer the following questions:
1. If you took 400 samples, with 20 BUQU 1230 students in each sample, and found the average of each 20-student sample - what would the standard deviation of this sampling distribution be called? Calculate the value for the standard deviation of the sampling distribution.
(2 points)
2. Referring to the 400 samples that you've taken (with 20 students in each sample), between what two values would you expect to find the middle 50% of the sampled averages?
(3 points)
3. Now let's say you took 400 samples, with 50 BUQU 1230 students in each sample, and found the average of each 50-student sample - what would the standard deviation of the sampling distribution be? Between what two values would you expect to find the middle 50% of the sampled averages?
(3 points)
4. Explain the difference between your answers to 2 & 3.
(2 points)
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