Question
Thirty random students took a calc test. If the sample mean was 90 & the standard deviation was 13.9, construct a 99% confidence interval for the mean score of all students.
Is the answer 83.03 to 96.97??
Is the answer 83.03 to 96.97??
Answers
MathGuru
This looks within range. There may be differences due to rounding when using a confidence interval formula.