EBK BUSINESS STATISTICS
EBK BUSINESS STATISTICS
7th Edition
ISBN: 8220102743984
Author: STEPHAN
Publisher: PEARSON
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An engineer who accidentally inhaled poisonous fumes was given treatment for it. The concentration of poison in the engineer's blood was measured every hour. The table below shows the record: Hours Since Inhal ati on 1 5 Concentration 38.1 31.2 28.6 26.9 25.4 ug/ cm) The data in the table can be modelled by h = a +b lIn C, where h is the number of hours since the accident and C is the concentration of poison in the blood. If the engineer is allowed to return to work when the concentration of poison falls below 0.2, how many days must they wait to return to work? (Round your answer UP to the nearest day). Answer: 3. 2.
1. Can balloons hold more air or more water before bursting? A student purchased a large bag of 12-inch balloons. He randomly selected 10 balloons from the bag and then randomly assigned half of them to be filled with air until bursting and the other half to be filled with water until bursting. He used devices to measure the amount of air and water was dispensed until the balloons burst. Here's the data: Air (ft') Water (ft) 0.52 0.44 0.58 0.41 0.50 0.55 0.46 0.61 0.38 0.45 Does the data give convincing evidence air filled balloons can attain a greater volume than water filled balloons?
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