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A clinical trial for a new fertility treatment was provided to 250 women for a 10 year study perio~Investigators were interested in noting when women became pregnant for the first time (subsequent pregnancies were not an outcome of interest, only first pregnancies). Every 2 years, they came in for a follow-up visit and were asked if they were pregnant (outcome). Project coordinators also took note at these visits if any of the women had been loss-to-follow-up. Of the 250 women at the beginning of the study, 97 became pregnant by the first visit. During visits 2 and 3, an additional 23 women became pregnant by each visit. Another 15 women became pregnant by the 4th visit, and a final 13 women became pregnant by the last visit. There were also 2 women lost to follow-up at visit 1, 3 women LTFU in visit 2, 4 women LTFU in visit 3, and 16 women LTFU in visit 4. How many person-years are there in this study data?
What dimensions will minimize Farmer Johns costs? What are Farmer John's minimum possible costs? Verify that you have found an absolute minimum(be complete)
Using the second derivative or otherwise, distinquish the maximum and minimu points of the curve.
the abc company has a large order for special uniforms to be used in an urgent operation. working the normal two shifts
How much heat (in kJ) is absorbed by a 500. g sample of water when it is heated from 44.0°C to 67.0°C? The specific heat capacity of water is 4.184 J/g°C.
Determine the width of a river that flows due east, if the surveyor finds that a tree on the opposite bank had a bearing of 22 30 E from a certain point and bearing N 15 W from a point 400 feet downstream.
Discuss examples of administrative decisions that might be made in the managing of performance of professor?
Describe the kinds of actions or things that a teacher should be doing in each of the three parts of a lesson. (Note that not all of these would be done in every lesson.) Which actions should you use almost all of the time?
The price of a gallon of unleaded gas has risen to $2.88 today. Yesterday's price was $2.81 . Find the percentage increase. Round your answer to the nearest tenth of a percent.
An electronics store receives a shipment of 30graphing calculators, including 3 that are defective. Four calculators are selected to be sent to a local high school.
one soccer field is an rectangle 375 feet long and 230 feet wide what is the area and perimeter of it. but what if the area of the soccer field in square yard? What is the perimeter in yards?
How much salt is present in the tank at the end of 14 min? (Round your answer to one decimal place.)
the length of a pool is 22 ft. the width is 40 ft. if the volume of the pool is 2,000 ft3, which equation below could be used to find the depth of the pool?
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