Given that a sample of size 12 was taken from a finite population of 60 with a population standard deviation of 1.8,what would be the margin of error at a 95% level of confidence?
A)±1.018
B)±0.9186
C)±12.22
D)±0.4452

Question

Quizplus · Accepted Answer

The margin of error can be calculated using the formula: 
Margin of error = (Z-score)*(Population standard deviation)/sqrt(sample size)

At 95% level of confidence, the Z-score is 1.96 (taken from the standard normal distribution table).

Plugging in the values, Margin of error = (1.96)*(1.8)/sqrt(12) = 0.9186

Therefore, the best choice is B) ±0.9186.

Given That a Sample of Size 12 Was Taken from a Finite