Question: Question 3. Find the probability that a randomly selected household in North America uses greater than 161 gallons of water per day. Calculate the z-value

Question 3. Find the probability that a randomly selected household in North America uses greater than 161 gallons of water per day. Calculate the z-value using the formula and find the probability using the ztable or technology (e.g. calculator). Show your work. (10%) Question 4. Find the probability that a randomly selected household in North America uses between 69 and 161 gallons of water per day. Show your work. (10%) Question 5. Find the 90" percentile of the value of daily water use per household in gallon. Use the formula of z-score and either z-table or technology (e.g. calculator). Show your work. (10%)

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