Homework Help: statistics

Posted by tristen on Monday, June 18, 2012 at 3:02pm.

11. A local health care company wants to estimate the mean weekly elder day care cost. A sample of 10 facilities shows a mean of $250 per week with a standard deviation of $25. What is the 90 percent confidence interval for the population mean?

statistics - MathGuru, Monday, June 18, 2012 at 5:28pm
Use a confidence interval formula:

CI90 = mean ą 1.645(sd/√n)
...where ą 1.645 represents the 90% confidence interval using a z-table, sd = standard deviation, √ = square root, and n = sample size.

Plug your data into the formula to calculate the confidence interval.

I hope this will help get you started.

Answer this Question

Related Questions

Math - A company is considering offering child care for their employees. They ...
HEALTH - how would I do a power point on the to distinguish between these ...
research writing - write a essay on, why health care policies are likely to ...
healthcare - Most people feel health care is priceless; however, health care ...
health - identify two key health care related challenges of the aging ...
Health Care Administration - A Health Care Administrator has been hired by an, ...
health care - Can mental illness be cured? o Has the concept of ...
health care cost - How does the cost of of health care cost nationally Impact of...
Health - Create a PowerPoint® presentation of at least 9 slides outlining ...
introduction to health care - What do you see as the purpose of health insurance...

For Further Reading

First Name:
School Subject:
Answer: