Help!! **Educational Website Text: Analysis of Rainwater pH Distribution**---**Emissions and Acid Rain Overview**Emissions of sulfur dioxide by industry set off chemical changes in the atmosphere that result in "acid rain." The acidity of liquids is measured by pH on a scale of 0 to 14. Distilled water has pH 7.0, and lower pH values indicate acidity. Normal rain is somewhat acidic, so acid rain is sometimes defined as rainfall with a pH below 5.0.**Sample Data of Rainwater pH**A sample of 105 rainwater specimens had mean pH 5.43, standard deviation 0.54; and five-number summary 4.33, 5.05, 5.44, 5.79, 6.81.**Part (a): Compare the Mean and Median***Compare the mean and median and also the distances of the two quartiles from the median.***Does it appear that the distribution is quite symmetric? Why?**- **Option 1:** The third quartile is closer to the median than the first quartile is. This indicates that the third quartile may have been pushed down by a right-hand skew in the distribution.- **Option 2:** The median is a relatively resistant measure, while the mean isn't. Therefore, the mean gets pulled further away from the direction of a long tail. Since the mean is lower than the median, we conclude that the distribution has a right-hand tail.- **Option 3:** The mean is almost identical to the median, and the quartiles are similar distances from the median. This suggests that the distribution is reasonably symmetric. *(Correct Answer)*- **Option 4:** The mean is a relatively resistant measure, while the median isn't. Therefore, the median gets pulled further away from the direction of a long tail. Since the median is lower than the mean, we conclude that the distribution has a right-hand tail.---**Part (b): Normal Distribution Analysis***If the distribution is really $ N(5.43, 0.54) $, what proportion of observations would be less than 5.05? (Enter your answer rounded to four decimal places.)*- **Proportion:** (Students are required to provide their calculations and enter the value here.)*If the distribution is really \( N(5.43,

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The normal distribution is a continuous probability distribution. It is always bell-shaped curve.…

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Emissions of sulfur dioxide by industry set off chemical changes in the atmosphere that result in "acid rain." The acidity of liquids is measured by pH on a scale of 0 to 14. Distilled water has pH 7.0, and lower pH values indicate acidity. Normal rain is somewhat acidic, so acid rain is sometimes delined as rainfall with a pH below 5.0. A sample of 105 rainwater specimens had mean pH 5.43; standard deviation 0.54; and five-number summary 4.33, 5.05, 5.44, 5.79, 6.81. (a) Compare the mean and median and also the distances of the two quartiles from the median. Does it appear that the distribution is quite symmetric? Why? The third quartile is closer to the median than the first quartile is. This indicates that the third quartile may have

Emissions of sulfur dioxide by industry set off chemical changes in the atmosphere that result in "acid rain." The acidity of liquids is measured by pH on a scale of 0 to 14. Distilled water has pH 7.0, and lower pH values indicate acidity. Normal rain is somewhat acidic, so acid rain is sometimes delined as rainfall with a pH below 5.0. A sample of 105 rainwater specimens had mean pH 5.43; standard deviation 0.54; and five-number summary 4.33, 5.05, 5.44, 5.79, 6.81. (a) Compare the mean and median and also the distances of the two quartiles from the median. Does it appear that the distribution is quite symmetric? Why? The third quartile is closer to the median than the first quartile is. This indicates that the third quartile may have

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Help!!

**Educational Website Text: Analysis of Rainwater pH Distribution**

---

**Emissions and Acid Rain Overview**

Emissions of sulfur dioxide by industry set off chemical changes in the atmosphere that result in "acid rain." The acidity of liquids is measured by pH on a scale of 0 to 14. Distilled water has pH 7.0, and lower pH values indicate acidity. Normal rain is somewhat acidic, so acid rain is sometimes defined as rainfall with a pH below 5.0.

**Sample Data of Rainwater pH**

A sample of 105 rainwater specimens had mean pH 5.43, standard deviation 0.54; and five-number summary 4.33, 5.05, 5.44, 5.79, 6.81.

**Part (a): Compare the Mean and Median**

*Compare the mean and median and also the distances of the two quartiles from the median.*

**Does it appear that the distribution is quite symmetric? Why?**

- **Option 1:**
The third quartile is closer to the median than the first quartile is. This indicates that the third quartile may have been pushed down by a right-hand skew in the distribution.

- **Option 2:**
The median is a relatively resistant measure, while the mean isn't. Therefore, the mean gets pulled further away from the direction of a long tail. Since the mean is lower than the median, we conclude that the distribution has a right-hand tail.

- **Option 3:**
The mean is almost identical to the median, and the quartiles are similar distances from the median. This suggests that the distribution is reasonably symmetric. *(Correct Answer)*

- **Option 4:**
The mean is a relatively resistant measure, while the median isn't. Therefore, the median gets pulled further away from the direction of a long tail. Since the median is lower than the mean, we conclude that the distribution has a right-hand tail.

---

**Part (b): Normal Distribution Analysis**

*If the distribution is really $ N(5.43, 0.54) $, what proportion of observations would be less than 5.05? (Enter your answer rounded to four decimal places.)*

- **Proportion:**
(Students are required to provide their calculations and enter the value here.)

*If the distribution is really \( N(5.43,

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