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.

Question 1085211: 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 stanbon(75887) (Show Source): You can put this solution on YOUR website!
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.
-----
Sample Mean:: 50
Margin of Error = 1.96*10/sqrt(25) = 3.92
-----
95% CI:: 50-3.92 < u < 50+3.92
------------------
Cheers,
Stan H.
-------
RELATED QUESTIONS
A NORMAL POPULATION HAS STANDARD DEVIATION OF 10. A RANDOM SAMPLE OF SIZE 25 HAS A MEAN... (answered by Boreal)

Construct a 95% confidence interval for the population mean, μ. Assume the... (answered by ewatrrr)

Suppose a random sample of 50 values is taken from a normal population with standard... (answered by ewatrrr,stanbon)

A sample of 21 is taken from a normal distributed population. The sample has a mean of... (answered by Fombitz)

A sample of size n=26 has a sample mean x= 14.8 and a sample standard deviation s=2.6 (answered by jim_thompson5910)

Construct a 95% confidence interval for the population mean, μ. Assume the... (answered by Boreal)

A sample of size n=11 has a sample mean xbar=15.6 and sample standard deviation s=2.4.... (answered by ewatrrr)

A random sample of 56 fluorescent light bulbs has a mean life of 645 hours with a... (answered by stanbon)

I need some serious help please! Find the appropriate confidence interval for the... (answered by stanbon)