What is the total area of Canada (in either square kilometers or square miles)?

Estimating Confidence Intervals

For each of the following questions, answer in terms of a range, rather than a single number. Specifically, you should supply a 98% confidence interval. A confidence interval is the range within which you expect the correct answer to fall. For example, suppose you answer a question by supplying a 98% confidence interval that is 2,000 to 7,000. This means that you think there is only a 2% chance that the real answer is either less than 2,000 or more than 7,000. The correct answers can be found at the end of the chapter on page 452.

1. How many full-time students were enrolled in U.S. colleges and universities in 2011?

2. According to the official count, how many people died in the 2011 earthquake and tsunami in Japan?

3. In what year did Martin Van Buren begin his term as the president of the

United States?

4. In 2009, what was the average life expectancy in Canada?

5. How many dollars did the United States spend for military expenditures in 2010?

6. In what year did New Zealand give women the right to vote?

7. What was the median salary of a U.S. male college graduate in 2009?

8. What is the total area of Canada (in either square kilometers or square miles)?

9. What was the estimated population of France in 2010?

10. Of the residents of Canada, what percentage report that they are Roman Catholics?

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erive the differential equations in terms of the liquid heights h1 and h2.

  Figure 7.18 shows a liquid-level system in which two tanks have cross-sectional areas A1 and A2, respectively. The volume flow rate into tank 1 is qi. A pump is connected to the bottom….

Derive the differential equation relating the liquid height h and the volume flow rate qi at the inlet.

  Consider the single-tank liquid-level system shown in Figure 7.19, where the volume flow rate into the tank through a pipe is qi. The liquid leaves the tank through an orifice….

Derive the differential equations in terms of the liquid heights h1 and h2.

Figure 7.20 shows a hydraulic system of two interconnected tanks that have the same cross-sectional area of A. A pump is connected to tank 1. Assume that the relationship between the….