Test Statistic (2 decimals): Give the P-value (4 decimals):

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
Topic Video
Question
100%

Part 2 and 3

Andre recently found a die (the traditional, six-sided variety) at the park. He took it home and rolled it 100 times and recorded the results (found in the table below). Is this a 'fair die' or has it been tampered with? Test at the \( \alpha = 0.05 \) level of significance.

**Which would be correct hypotheses for this test?**

- \( H_0: \) The die is a fair die; \( H_1: \) The die has been tampered with [selected]
- \( H_0: p_1 = p_2; \, H_1: p_1 \neq p_2 \)
- \( H_0: \mu_1 = \mu_2; \, H_1: \mu_1 \neq \mu_2 \)
- \( H_0: \) The die has been tampered with; \( H_1: \) The die is a fair die

**Roll count:**

\[
\begin{array}{|c|c|}
\hline
\text{Rolled} & \text{Count} \\
\hline
1 & 0 \\
2 & 5 \\
3 & 3 \\
4 & 5 \\
5 & 1 \\
6 & 86 \\
\hline
\end{array}
\]

**Test Statistic (2 decimals):**

\[ \_\_\_\_ \]

**Give the P-value (4 decimals):**

\[ \_\_\_\_ \]

**Which is the correct result:**

- Do not Reject the Null Hypothesis
- Reject the Null Hypothesis [selected]

**Which would be the appropriate conclusion?**

- There is not enough evidence to suggest that the die has been tampered with.
- There is enough evidence to suggest that the die has been tampered with. [selected]
Transcribed Image Text:Andre recently found a die (the traditional, six-sided variety) at the park. He took it home and rolled it 100 times and recorded the results (found in the table below). Is this a 'fair die' or has it been tampered with? Test at the \( \alpha = 0.05 \) level of significance. **Which would be correct hypotheses for this test?** - \( H_0: \) The die is a fair die; \( H_1: \) The die has been tampered with [selected] - \( H_0: p_1 = p_2; \, H_1: p_1 \neq p_2 \) - \( H_0: \mu_1 = \mu_2; \, H_1: \mu_1 \neq \mu_2 \) - \( H_0: \) The die has been tampered with; \( H_1: \) The die is a fair die **Roll count:** \[ \begin{array}{|c|c|} \hline \text{Rolled} & \text{Count} \\ \hline 1 & 0 \\ 2 & 5 \\ 3 & 3 \\ 4 & 5 \\ 5 & 1 \\ 6 & 86 \\ \hline \end{array} \] **Test Statistic (2 decimals):** \[ \_\_\_\_ \] **Give the P-value (4 decimals):** \[ \_\_\_\_ \] **Which is the correct result:** - Do not Reject the Null Hypothesis - Reject the Null Hypothesis [selected] **Which would be the appropriate conclusion?** - There is not enough evidence to suggest that the die has been tampered with. - There is enough evidence to suggest that the die has been tampered with. [selected]
Expert Solution
Step 1

Part 2.

Assume the equal proportion. The die is rolled 100 time. The proportion rolling 1 is 16.6667=16×100. For other values also having the sample expected value.

The expected value is,

Rolled Count Expected
1 0 16.6667
2 5 16.6667
3 3 16.6667
4 5 16.6667
5 1 16.6667
6 86 16.6667

The test statistic is,

χ2=Sum of Observed count-Expected count2Expected count=0-16.6667216.6667+5-16.6667216.6667+3-16.6667216.6667+5-16.6667216.6667+1-16.6667216.6667+0-16.6667216.6667=16.667+8.167+11.207+8.167+14.727+288.427=347.362347.36

Thus, the test statistic is 347.36.

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Algebraic Operations
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
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