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Section 2. Suppose that you work for a government sector for water resources management. Your section is responsible to estimate the required amount of water
Section 2. Suppose that you work for a government sector for water resources management. Your section is responsible to estimate the required amount of water for household use. Assume that the volume of daily water use per household in North America follows a normal distribution. The mean volume of daily water use is 138 gallons per household and the standard deviation is 46 gallons. Refer to the textbook 6.1 and 6.2. Question 1. Sketch the distribution of daily water use (in gallon) per household in North America. Clearly label x and y-axis. Refer to the textbook 6.1. Figure 6.3. (10%) Question 2. Find the probability that a randomly selected household in North America uses less than 69 gallons of water per day. Calculate the z-value using the formula and find the probability using the z-table or technology (e.g. calculator). Show your work. (10%)
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