And aquarium should contain 15,000 L of water Winfield correctly it will overflow if it gets to 17,600 L one day there was an accident and the tank cracks in four places water flows out of each crack at the rate of 1/2 L per hour in emergency pumpkin refill the tank at a rate of 2 L per minute how many minutes must the pump run to replace the water that was lost in each hour.

Aresearch study is studying the effects of a new drug for osteoporosis alzheimer's disease (ad) for women above the age of 65 years. a group of individuals with osteoporosis is randomized into two groups. one group is treated conventionally, and the second group is treated with the new medication. assessments are made at 3, 6, 12, 36, and 48 months. the conventionally treated group is assessed for ad using a serum blood test, and the treatment group is assessed for ad using a pet radiotracer that binds to beta-amyloid plaques. in comparing these 2 trial arms, the authors of the study may encounter which type of bias? a. selection bias on the risk of developing b. measurement bias c. confounding bias d. recall bias e. lead-time bias