Choose the best estimate from the list.
is approximately 1
, 2
, 2, 3.
A. 2
B. 3
C. 2
D. 1
Answer: A
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Use the guidelines to evaluate the study. From the information given, what is the biggest flaw in the study?A medical researcher randomly selects 500 Japanese people and 500 Americans. She questions the 1000 people. She finds that the Americans work longer hours on average and also that the Americans have a higher rate of heart disease. She concludes that working longer hours is associated with a higher incidence of heart disease.
A. Participation bias B. Selection bias C. The source D. Variables are hard to define/measure E. Confounding variables
Solve the problem.Georgia agrees to lend money to Matt at a special interest rate of 8.5% per year, on the condition that he borrow enough that he would pay her $601 in interest over a 8 month period. What was the minimum amount Matt could borrow?
A. $9427.45 B. $10,605.88 C. $12,121.01 D. $10,517.50
Solve the problem.An object is thrown upward from the top of a 
building with an initial velocity of 48 feet per second. The height h of the object after t seconds is given by the quadratic equation 
When will the object hit the ground?
A. 3 sec B. 5 sec C. 160 sec D. 2 sec
Solve the problem.A gallon of paint can cover about 400 square feet. Find the number of gallons of paint that John should purchase to paint two coats of paint on all the walls and the ceiling of a room that measures 7 feet by 6 feet with a 12 foot ceiling. Remember, you cannot purchase a partial container of paint.
A. 2 gal B. 0 gal C. 4 gal D. 3 gal