# Pg 324 - (a) male bears. (b) female bears. 2. Find the...

This preview shows page 1. Sign up to view the full content.

Crystal Jenkins STA 2023 TR 10:00am Case Study Appalachian Bear Rescue (ABR) is a not-for-profit organization located near the Great Smoky Mountains National Park. ABR’s programs include the rehabilitation of orphaned and injured black bears, as well as research and education about Appalachian black bears. ABR provides the most natural environment possible for rehabilitating black bears before their release back into the wild. Recently, Katie Settlage performed a study to learn more about the Appalachian black bear population in the Great Smoky Mountains National Park. She and a team of researchers found 68 black bears in the park and took measurements such as paw size, weight, and shoulder height. The stem-and-leaf plots below show the shoulder heights (in centimeters) of the 40 male and 28 female bears from the study. 1. Use the sample to find a point estimate for the mean shoulder height of
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: (a) male bears. (b) female bears. 2. Find the standard deviation of the sample of shoulder heights for the (a) male bears. (b) female bears. 3. Use the sample to construct a 95% confidence interval for the mean shoulder height of (a) male bears. (b) female bears. 4. Use the sample to construct a 95% confidence interval for the mean shoulder height of all bears in the study. How do your results differ from those in Exercise 3? Explain. 5. A researcher wants to estimate the mean shoulder heights for both male and female bears within 0.5 centimeter. Determine the minimum sample size required to construct a 99% confidence interval for the population mean shoulder height of (a) male bears. Assume the population standard deviation is 12.4 centimeters. (b) female bears. Assume the population standard deviation is 7.8 centimeters...
View Full Document

## This note was uploaded on 03/08/2012 for the course STA 2023 taught by Professor Bagwhandee during the Fall '07 term at University of Central Florida.

Ask a homework question - tutors are online