An agriculture publication claims that the population mean of the birth weights for all Herdwick sheep is 4.62 kg. A veterinary service has hired you to test that claim. To do so, you select a random sample of 35 Herdwick sheep and record the birth weights. Assume it is known that the population standard deviation of the birth weights of Herdwick sheep is 2.15 kg. Based on your sample, follow the steps below to construct a 95% confidence interval for the population mean of the birth weights for all Herdwick sheep. Then state whether the confidence interval you construct contradicts the publication's claim. (If necessary, consult a list of formulas.)
An agriculture publication claims that the population mean of the birth weights for all Herdwick sheep is 4.62 kg. A veterinary service has hired you to test that claim. To do so, you select a random sample of 35 Herdwick sheep and record the birth weights. Assume it is known that the population standard deviation of the birth weights of Herdwick sheep is 2.15 kg. Based on your sample, follow the steps below to construct a 95% confidence interval for the population mean of the birth weights for all Herdwick sheep. Then state whether the confidence interval you construct contradicts the publication's claim. (If necessary, consult a list of formulas.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question

Transcribed Image Text:## Testing a Population Mean Claim for Herdwick Sheep Birth Weights
An agriculture publication claims that the population mean of the birth weights for all Herdwick sheep is 4.62 kg. A veterinary service has been hired to test this claim. You select a random sample of 35 Herdwick sheep and record their birth weights. Assume it is known that the population standard deviation of the birth weights of Herdwick sheep is 2.15 kg.
### Steps to Construct a 95% Confidence Interval
Based on your sample, follow the steps below to construct a 95% confidence interval for the population mean of the birth weights for all Herdwick sheep. Then state whether the confidence interval you construct contradicts the publication's claim.
1. **Sampling Data**:
- **Number of sheep**: 35
- **Sample mean**: 3.49 kg
- **Sample standard deviation**: 2.09 kg
- **Population standard deviation**: 2.15 kg
2. **Confidence Interval Construction Steps**:
- Enter the values in the provided fields for sample size, point estimate, and standard deviations.
- Use the critical value from the table provided for 95% confidence:
- \( z_{0.025} = 1.960 \)
#### Diagram Explanation
- The diagram contains fields to calculate the 95% confidence interval.
- It includes a table for Critical Values.
- After filling out the relevant values and computing, you obtain the margin of error and the confidence interval.
3. **Graph**:
- Plot the lower and upper limits of the confidence interval on the graph.
- Mark the point for the publication's claim of 4.62 kg.
### Evaluation of Claim
4. **Check the Claim**:
- Does the 95% confidence interval contradict the publication's claim?
- Options provided:
- No, the confidence interval does not contradict the claim. The publication's claim is inside the 95% confidence interval.
- No, the confidence interval does not contradict the claim. The publication's claim is outside the 95% confidence interval.
- Yes, the confidence interval contradicts the claim. The publication's claim is inside the 95% confidence interval.
- Yes, the confidence interval contradicts the claim. The publication's claim is outside the 95% confidence interval.
Select the most appropriate answer based on your calculations and
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 20 images

Recommended textbooks for you

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON

The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman

Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman