Wednesday

November 26, 2014

November 26, 2014

Posted by **----** on Thursday, November 21, 2013 at 11:11am.

a) Make a 90% confidence interval for μ

b) Construct a 95% confidence interval for μ.

c) Determine a 99% confidence interval for μ.

d) Does the width of the confidence intervals constructed in parts a through c increase as the confidence level increases? Explain your answer

- Statistics -
**PsyDAG**, Thursday, November 21, 2013 at 11:24am% = mean ± ? SEm

SEm = SD/√n

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability ([1-%]/2) to find the Z score. Insert that into ? position.

Example: 95% = 74.8 ± 1.96 SEm

After you do a through c, you should be able to explain.

**Answer this Question**

**Related Questions**

statistics - A sample of 40 observations is selected from one approximately ...

statistics - A sample of 40 observations is selected from one approximately ...

Statistics - 8. A sample of 65 observations is selected from one population. The...

statistics - 7. A sample of 40 observations is selected from one population. The...

stats - A sample of 12 observations is selected from a normal population for ...

statistics - A specific study found that the average number of doctor visits per...

Math - Q1. A population has a mean of µ = 80 with σ = 20. a. If a single ...

Math (Statistic) - Considered the sampling distribution of a sample mean ...

statistics - How do we compute sample size fluctuations? Suppose we have a ...

statistics - Given a sample size of 38, with sample mean 660.3 and sample ...