SOLUTION: A simple random sample of 120SAT scores has a mean of 1500. Assume that scores have a standard deviation of 175.construct a 99% confidence interval estimate of the mean SAT score.

Question 1115350: A simple random sample of 120SAT scores has a mean of 1500. Assume that scores have a standard deviation of 175.construct a 99% confidence interval estimate of the mean SAT score.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A simple random sample of 120 SAT scores has a mean of 1500. Assume that scores have a standard deviation of 175.construct a 99% confidence interval estimate of the mean SAT score.
-----
u = 1500
std = 175
------
sample mean = 1500
ME = 2.5758*175 = 450.77
-----------------
99% CI:: 1500-450.77 < u < 1500+450.77
99% CI:: 149.23 < u < 1950.77
---------------
Cheers,
Stan H.
------------

RELATED QUESTIONS
A random sample of 225 SAT scores has a mean of 1522. Assume that SAT scores have a... (answered by stanbon)

A random sample of 625 SAT scores has a mean of 1500. Assume that SAT scores have a... (answered by reviewermath)

For a simple random sample of adults, IQ scores are normally distributed with a mean of... (answered by ewatrrr)

5 In exercises 5-8 assume that SAT scores are normally distributed with mean u=1518 and... (answered by tommyt3rd)

ACT scores have a mean (μ) of 18 and a standard deviation (σ) of 6. Suppose... (answered by Fombitz)

IQ scores in a general adult population have mean 100 and standard deviation 15. A simple (answered by stanbon)

Please help me answer this question. A random sample of 121 men regarding IQ scores... (answered by ewatrrr)

Please help with this: Assume the SAT test scores are normally distributed with a mean (answered by Boreal)

Assume the SAT Mathematics Level 2 test scores are normally distributed with a mean of... (answered by stanbon)