Wednesday

September 17, 2014

September 17, 2014

Posted by **Erin** on Wednesday, June 6, 2012 at 10:22pm.

x=60,n=300, 99% confidence.

The 99% confidence interval is (_,_)

2) A researcher wishes to estimate the proportion of adults who have high-speed internet access. What size sample should be obtained if she wishes the estimate to be within 0.04 with 99% confidence if

a) she uses a previous estimate of 0.52?

b) she does not use any prior estimates?

- Elementary Statistics (Partial) -
**PsyDAG**, Thursday, June 7, 2012 at 4:46pm1. 99% = mean ± 2.575 SEm

SEm = SD/√n

What is the value of the standard deviation (SD)?

**Answer this Question**

**Related Questions**

Statistics - The standard deviation for a population is σ = 15.3. A sample ...

Statistics - Which of the following statements best describes the uncertainty ...

Statistics - Use the sample data and confidence level to construct the ...

Statistics - You are given the following information obtained from a random ...

Statistics - We have calculated a 95% confidence interval for a proportion and ...

Statistics - Use the sample data and confidence level to construct the ...

Statistics - These are the only ones that I am having problems with. Please help...

Statistics - In a survey of 633 males ages 18-64, 395 say they have gone to the...

statistics - What do confidence intervals represent? What is the most ...

Statistics - When estimating a population mean μ, where the population ...