- #1
Phrynichos
- 3
- 0
The problem in question is as follows:
Find themargin of error for the given values of c, s, and n. where c is the confidence interval, s is the sample standard deviation and n is the number of objects.
c=0.65 s= 1.5 n=50
the formula: E= (zc s) / n^.5
Level of Confidence Chart
c ......zc
.80......1.28
.90......1.645
.95......1.96
.99.....2.575
As you can see, the zc value for c=.65 is not present on the chart. I don't know how to proceed to solve the problem by finding the corresponding zc for when c=.65. if anyone could show me, that would be appreciated.
thankx
Find themargin of error for the given values of c, s, and n. where c is the confidence interval, s is the sample standard deviation and n is the number of objects.
c=0.65 s= 1.5 n=50
the formula: E= (zc s) / n^.5
Level of Confidence Chart
c ......zc
.80......1.28
.90......1.645
.95......1.96
.99.....2.575
As you can see, the zc value for c=.65 is not present on the chart. I don't know how to proceed to solve the problem by finding the corresponding zc for when c=.65. if anyone could show me, that would be appreciated.
thankx