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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?
Try to find a number for x that when substituted in the formula yeilds a composite number. need to use 5 numbers. 0, 2 odd, 2 even.
alis coffee shop makes a blend that is a mixture of two types of coffee. type a coffee costs ali per pound and type b
A certain plane can fly 210 mph in calm air. If the plane can travel 540 miles against the wind in the same amount of time it can travel 810 miles with the wind, then what is the rate of the wind?
Supppose a baseball is thrown at 85 miles per hour.The ball will travel 320 ft when hit by a bat swung at 50 miles per hour and will travel 440 ft when hit by a bat swung at 80 miles per hour.
a how long does it take for money to double in value if it is invested in an account at 5 interest compounded
Find the volume of the solid obtained by revolving the graph of y=8x*sqrt(16-x^2) over [0,16] about the y-axis.
find four consecutive odd integers where the product of the two smaller numbers is 64 less than the product of two larger numbers.
modeled the word problem mathematically like system of equations and solve by the matrix method.a companys employees
Jessica drove miles using gallons of gas. At this rate, how many gallons of gas would she need to drive miles?
You want to create a mileage grid showing the distance between every pair of the 50 U.S. state capitals. How many numbers will you have to compute?
Confidence interval for the mean test score.
Explain the theory developed including capacitated s,t graphs and the lexicographic ordering rule based on the case study and suggested readings.
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