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if-the-mean-value-x-of-a-normally-distributed-data-is-10-and-number-of-observation-n-36-with-an-standard-deviation-sd-of-then

Question

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

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