#5 The following text appears to be for educational purposes involving statistical analysis and hypothesis testing:---1. **Testing Iron Concentration in Water**: - Does the sample mean concentration exceed the company’s claim of 2.5? Use a 5% level of significance to test this hypothesis based on samples taken from an industrial park. - Calculate a 95% confidence interval for the sample data.2. **Studying Chemical Z in Blood**: - Assess if the average concentration of Chemical Z is higher than 20%. This involves testing at a 5% significance level and calculating a 99% confidence interval from the given data. Table: Concentration Data Across Months\[\begin{array}{|c|c|c|}\hline\text{Month} & \text{Sample 1} & \text{Sample 2} \\\hline\text{Oct} & 3.1 & 1.5 \\\text{Nov} & 2.0 & 1.4 \\\text{Dec} & 1.6 & 1.6 \\\text{Jan} & 3.3 & 2.2 \\\text{Feb} & 3.9 & 3.3 \\\text{Mar} & 3.6 & 3.0 \\\text{Apr} & 3.8 & 3.8 \\\hline\end{array}\]3. **Long Term Graduation Rate**: - Is there sufficient evidence to show that the long term graduation rate is different from 67%? Evaluate using the given sample data from the university. 4. **Fishing Hours Mean Comparison**: - Utilize a 5% level of significance to assess whether there is a significant difference in the mean hours spent fishing from shore versus from a boat.5. **Analysis of Lay Fever Rates**: - Examine two random samples to determine if the rate of hay fever is significantly different between people over 50 and those under 25, using a significance level of 5%.**Note**: Several of these problems have been adapted from textbook examples.**End of Text**.---This text is meant for exercises in statistical hypothesis testing, confidence interval estimation, and comparison studies.

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Description: #5 The following text appears to be for educational purposes involving statistical analysis and hypothesis testing:---1. **Testing Iron Concentration in Water**: - Does the sample mean concentration exceed the company’s claim of 2.5? Use a 5% leve

Given Information : To determine that whether it is better to fish from the shore or a boat . Let ,…

Math

Statistics

5. Is it better to fish from the shore or a boat? Let x be a random variable representing the number of hours taken to catch a fish. The table below contains the data taken over several months for B from the shore, and A from a boat. Oct Dec Jan Feb Mar udy 3.3 AON B (shore) 1.8 3.2 6'E 3.3 1.6 3.6 1.5 1.4 2.2 3.8 9'T Use a 1% level of significance to determine if there is a difference in the population mean hours per fish using a boat compared with fishing from shore. (This is a paired difference problem.)

5. Is it better to fish from the shore or a boat? Let x be a random variable representing the number of hours taken to catch a fish. The table below contains the data taken over several months for B from the shore, and A from a boat. Oct Dec Jan Feb Mar udy 3.3 AON B (shore) 1.8 3.2 6'E 3.3 1.6 3.6 1.5 1.4 2.2 3.8 9'T Use a 1% level of significance to determine if there is a difference in the population mean hours per fish using a boat compared with fishing from shore. (This is a paired difference problem.)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The following text appears to be for educational purposes involving statistical analysis and hypothesis testing:

---

1. **Testing Iron Concentration in Water**:
- Does the sample mean concentration exceed the company’s claim of 2.5? Use a 5% level of significance to test this hypothesis based on samples taken from an industrial park.
- Calculate a 95% confidence interval for the sample data.

2. **Studying Chemical Z in Blood**:
- Assess if the average concentration of Chemical Z is higher than 20%. This involves testing at a 5% significance level and calculating a 99% confidence interval from the given data.

Table: Concentration Data Across Months

\[
\begin{array}{|c|c|c|}
\hline
\text{Month} & \text{Sample 1} & \text{Sample 2} \\
\hline
\text{Oct} & 3.1 & 1.5 \\
\text{Nov} & 2.0 & 1.4 \\
\text{Dec} & 1.6 & 1.6 \\
\text{Jan} & 3.3 & 2.2 \\
\text{Feb} & 3.9 & 3.3 \\
\text{Mar} & 3.6 & 3.0 \\
\text{Apr} & 3.8 & 3.8 \\
\hline
\end{array}
\]

3. **Long Term Graduation Rate**:
- Is there sufficient evidence to show that the long term graduation rate is different from 67%? Evaluate using the given sample data from the university.

4. **Fishing Hours Mean Comparison**:
- Utilize a 5% level of significance to assess whether there is a significant difference in the mean hours spent fishing from shore versus from a boat.

5. **Analysis of Lay Fever Rates**:
- Examine two random samples to determine if the rate of hay fever is significantly different between people over 50 and those under 25, using a significance level of 5%.

**Note**: Several of these problems have been adapted from textbook examples.

**End of Text**.

---

This text is meant for exercises in statistical hypothesis testing, confidence interval estimation, and comparison studies.

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