When we sample from an infinite population, what happens to the standard error of the mean if the sample size is decreased from 2500 to 1600. O Increased by 1.25 times O Decreased by 2.4 times O Decreased by 1.2 times O Increased by 1.4 times

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Remaining Time: 1 hour, 24 minutes, 37 seconds.
* Question Completion Status:
O (11.833, 13.419)
O (11.981, 13.567)
QUESTION 21
When we sample from an infinite population, what happens to the standard error of the mean if the sample size is decreased from 2500 to 1600.
O Increased by 1.25 times
O Decreased by 2.4 times
O Decreased by 1.2 times
O Increased by 1.4 times
QUESTION 22
A research worker wants to determine the average time it takes a mechanic to rotate the tires of a car, and she wants to be able to assert with 9596 confidence that the n
of her sample is off by at most 0.6 minutes. If she can presume from past experience that the actual time follows normal distribution with a standard deviation of 1.6 mir
how large the sample will she have to take?
28
O 20
O 19
O 27
Transcribed Image Text:Blackboard Remaining Time: 1 hour, 24 minutes, 37 seconds. * Question Completion Status: O (11.833, 13.419) O (11.981, 13.567) QUESTION 21 When we sample from an infinite population, what happens to the standard error of the mean if the sample size is decreased from 2500 to 1600. O Increased by 1.25 times O Decreased by 2.4 times O Decreased by 1.2 times O Increased by 1.4 times QUESTION 22 A research worker wants to determine the average time it takes a mechanic to rotate the tires of a car, and she wants to be able to assert with 9596 confidence that the n of her sample is off by at most 0.6 minutes. If she can presume from past experience that the actual time follows normal distribution with a standard deviation of 1.6 mir how large the sample will she have to take? 28 O 20 O 19 O 27
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