A bathtub holds 132 gallons of water. Water is draining from the tub at a rate of 6 gallons every minute. How long will it take
2 answers:
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Solution: We are given:
We have to find the amount of water that represents the top 97.5%.
We need to find the z value corresponding to probability to 0.975. Using the standard normal table, we have:
Now using the z score formula, we have:
Therefore, 129.4 ounces amount of water represents the top 97.5%