fatcousin
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sample size · mean · std dev → confidence interval at any level
[
parameters
]
sample size (n)
sample mean (x̄)
std deviation (s)
confidence level
90%
95%
99%
99.5%
critical value
z (large n)
t (small n)
[
result
]
lower
71.5912
upper
78.4088
critical value (t with df=49)
2.0086
standard error (s/√n)
1.6971
margin of error (±)
3.4088
interval
(71.5912, 78.4088)
>
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