calculate-the-99-confidence-interval-for-a-sample-mean-of-100-standard-deviation

Question

Calculate the 99% confidence interval for a sample mean of 100, standard deviation of 10, sample size of 30, and t-value of 2.756.

Accepted Answer

100 ± 2.756 * 10 / √30

Answer

100 ± 2.756 * √30 / 10

Answer

100 ± 2.756

Answer

100 ± 10 / 2.756