Wednesday

January 28, 2015

January 28, 2015

Posted by **Sandy** on Tuesday, February 26, 2013 at 1:16pm.

a) Construct a 95% conf. interval estimate of the mean SAT score.

b) Is a 99% conf. interval estimate of the mean SAT score wider than the 95% conf. interval estimate you got from part (a)? Why?

- Statistics -
**PsyDAG**, Wednesday, February 27, 2013 at 8:51pm95% = mean ± 1.96 SEm

SEm = SD/√n

99% = mean ± 2.575 SEm

This should allow you to answer the questions.

**Answer this Question**

**Related Questions**

statistics - The distribution of scores on the SAT is approx. normal with mu= ...

statistics - Suppose scores on the mathematics section of the SAT follow a ...

statistics - Suppose scores on the mathematics section of the SAT follow a ...

statistics - The SAT scores of a certain population of students are ...

Math (Statistics) - The SAT scores of a certain population of students are ...

Stats - A random sample of 100 GMAT scores has a mean of 500. Assume that GMAT ...

statistics - SAT Exam Scores – A school administrator wonders if students whose ...

statistics - Sat scores l around the nation tend to have a mean score around 500...

statistics - what are the mean and standard deviation of a sampling distribution...

statistics - Nine students took the SAT. Their scores are listed below. Later on...