The claim is that weights (grams) of quarters made after 1964 have a mean equal to 5.670 g as required by mint specifications. The sample size is n = 35 and the test statistic is t= -2.844. Use technology to find the P-value. Based on the result, what is the final conclusion? Use a significance level of 0.10. State the null and alternative hypotheses. Hou H₁: μ (Type integers or decimals. Do not round.) The test statistic is (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.)

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question

5

### Hypothesis Testing Example

#### Context
The claim is that the weights (in grams) of quarters made after 1964 have a mean equal to 5.670 grams, as required by mint specifications. Given a sample size of \( n = 35 \) and a test statistic of \( t = -2.844 \), find the P-value using statistical software. The task is to determine the final conclusion at a significance level of 0.10.

#### Steps for Hypothesis Testing

1. **State the Null and Alternative Hypotheses:**
   - \( H_0: \mu = 5.670 \)
   - \( H_1: \mu \neq 5.670 \)

   Here, \( H_0 \) is the null hypothesis stating that the mean weight of quarters is 5.670 grams, and \( H_1 \) is the alternative hypothesis stating that the mean weight is different from 5.670 grams.

2. **Test Statistic:**
   - The test statistic is given as \( t = -2.844 \).

3. **Find the P-value:**
   - Use statistical software to calculate the P-value corresponding to the test statistic of \( -2.844 \).

4. **Conclusion:**
   - Based on the P-value, determine whether there is sufficient evidence to reject the null hypothesis at the 0.10 significance level.

#### Analysis
- **Interpretation of Results:**
  Use the calculated P-value to assess if it is less than the significance level of 0.10. If it is, reject the null hypothesis, indicating that there is sufficient evidence to support that the mean weight of quarters differs from 5.670 grams. Otherwise, do not reject the null hypothesis.

#### Key Concepts
- **Null Hypothesis (\( H_0 \)):** The assumption that there is no effect or no difference.
- **Alternative Hypothesis (\( H_1 \)):** The assumption that there is an effect or a difference.
- **Test Statistic:** A standardized value used to decide whether to reject the null hypothesis.
- **P-value:** The probability of obtaining a result at least as extreme as the observed data, under the assumption that the null hypothesis is true.
- **Significance Level (\( \alpha \)):** The threshold for rejecting the null hypothesis; in this case, 0.10.

This exercise helps in understanding the process of
Transcribed Image Text:### Hypothesis Testing Example #### Context The claim is that the weights (in grams) of quarters made after 1964 have a mean equal to 5.670 grams, as required by mint specifications. Given a sample size of \( n = 35 \) and a test statistic of \( t = -2.844 \), find the P-value using statistical software. The task is to determine the final conclusion at a significance level of 0.10. #### Steps for Hypothesis Testing 1. **State the Null and Alternative Hypotheses:** - \( H_0: \mu = 5.670 \) - \( H_1: \mu \neq 5.670 \) Here, \( H_0 \) is the null hypothesis stating that the mean weight of quarters is 5.670 grams, and \( H_1 \) is the alternative hypothesis stating that the mean weight is different from 5.670 grams. 2. **Test Statistic:** - The test statistic is given as \( t = -2.844 \). 3. **Find the P-value:** - Use statistical software to calculate the P-value corresponding to the test statistic of \( -2.844 \). 4. **Conclusion:** - Based on the P-value, determine whether there is sufficient evidence to reject the null hypothesis at the 0.10 significance level. #### Analysis - **Interpretation of Results:** Use the calculated P-value to assess if it is less than the significance level of 0.10. If it is, reject the null hypothesis, indicating that there is sufficient evidence to support that the mean weight of quarters differs from 5.670 grams. Otherwise, do not reject the null hypothesis. #### Key Concepts - **Null Hypothesis (\( H_0 \)):** The assumption that there is no effect or no difference. - **Alternative Hypothesis (\( H_1 \)):** The assumption that there is an effect or a difference. - **Test Statistic:** A standardized value used to decide whether to reject the null hypothesis. - **P-value:** The probability of obtaining a result at least as extreme as the observed data, under the assumption that the null hypothesis is true. - **Significance Level (\( \alpha \)):** The threshold for rejecting the null hypothesis; in this case, 0.10. This exercise helps in understanding the process of
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 4 images

Blurred answer
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
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 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…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
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
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman