SOLUTION: A NORMAL POPULATION HAS STANDARD DEVIATION OF 10. A RANDOM SAMPLE OF SIZE 25 HAS A MEAN OF 50. CONSTRUCT A 95% CONFIDENCE INTERVAL ESTMATE OF THE POPULATION MEAN.
Algebra ->
Permutations
-> SOLUTION: A NORMAL POPULATION HAS STANDARD DEVIATION OF 10. A RANDOM SAMPLE OF SIZE 25 HAS A MEAN OF 50. CONSTRUCT A 95% CONFIDENCE INTERVAL ESTMATE OF THE POPULATION MEAN.
Log On
Question 1085205: A NORMAL POPULATION HAS STANDARD DEVIATION OF 10. A RANDOM SAMPLE OF SIZE 25 HAS A MEAN OF 50. CONSTRUCT A 95% CONFIDENCE INTERVAL ESTMATE OF THE POPULATION MEAN. Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! CI is mean +/- t(df=24, 0.975)*s/sqrt(n)
use 50 as the point estimate of the mean
50+/-2.06*10/5
interval width is +/-4.12
CI is (45.88, 54.12)
