Q.
If the mean value (X) of a normally distributed data is 10 and number of observation (n)=36 with an standard deviation (sd) of 0.3, then 90% confidence interval is :
[A] 10±0.08
[B] 10±8.23
[C] 10±0.16
[D] 10±4.15
Answer & Explanation
Answer: 10±0.08