**Probability Exercise**

Probability Exercise

Maximum and Minimum Temperatures

**Search** the Internet for U.S. climate data.

**Choose** the city in which you live.

**Create** a tab that reads Daily.

1. **Prepare** a spreadsheet with three columns: Date, High Temperature, and Low Temperature. List the past 60 days for which data is available. **Include** the excel spreadsheet as a part of your submission.

2. **Prepare** a histogram for the data on **high** temperatures and **comment** on the shape of the distribution as observed from these graphs.

3. **Calculate** **X bar** (sample mean) and **S** (sample standard deviation).

4. What percentage of the high temperatures are within the interval

X bar - s to X bar + s?

What percentage would you expect? Why?

5. What percentage of the high temperatures are within the interval

X bar - 2s to X bar + 2s?

What percentage would you expect? Why?

6. How do these percentages compare to the corresponding percentages for a normal distribution?

7. **Prepare** a histogram for the data on **low** temperatures and **comment** on the shape of the distribution as observed from these graphs.

8. **Calculate** **X bar** (sample mean) and **S** (sample standard deviation).

9. What percentage of the low temperatures are within the interval

X bar - s to X bar + s?

What percentage would you expect? Why?

10. What percentage of the low temperatures are within the interval

X bar - 2s to X bar + 2s?

What percentage would you expect? Why?

11. How do these percentages compare to the corresponding percentages for a normal distribution?

12. Would you conclude that the two distributions are normally distributed? Why or why not?

**Format **your assignment consistent with APA guidelines. Ensure you submit your excel spreadsheet calculations in addition to a word document with the answers to the requirements above.

**Click **the Assignment Files tab to submit your assignment.

**Category:**Business, General Business

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