SOLUTION: Find the margin of error for the given values of​ c,o ​, and n. c​=0.95, o=3.9 ​, n=100

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Question 1173036: Find the margin of error for the given values of​ c,o ​, and n.
c​=0.95, o=3.9 ​, n=100
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi, 

c​=0.95, o=3.9 ​, n=100

df = 100-1 = 99 , c=0.98​ 

Using online Calculator/above values for t-value:   z= 1.98 (t-critical value)

ME =+z%2Asigma%2Fsqrt%28n%29

ME =1.98%2A3.9%2Fsqrt%28100%29 = .77

Assuming mean = 0

-.77 < mu < .77

ONe may use charts or online calculators for t-values used for small samples

For Large Samples, following z-values are used

 = CI	z = value

90%	z =1.645

92%	z = 1.751

95%	z = 1.96

98%	z = 2.326

99%	z = 2.576