Which students in the Watson and Moritz (2000) study were at times indifferent about the sizes of samples used for statistical investigations?
a. Samplers with primitive random selection
b. Samplers with preselection of results
c. Samplers with random or distributed selection
d. Equivocal samplers
Ans: d
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Solve the problem.Where Jane lives, a sales tax of 3% is added to all purchases. If she buys a camera that costs $990, how much will she pay for the camera, including the tax? Round your answer to the nearest cent.
A. $1029.60 B. $1287.00 C. $1009.80 D. $1019.70
Simplify the expression.(x-5)7
A. -7x5
B. -7x35
C. 
D. - x35
Graph the function f by starting with the graph of y = x2 and using transformations (shifting, compressing, stretching, and/or reflection).f(x) = - 
x2 
A. 
B. 
C. 
D. 
Solve the problem.The following data represent the marital status of females 18 years and older in a certain U.S. city. 
Determine the number of females 18 years old and older who are married or widowed.
A. 368,000 B. 370,000 C. 307,000 D. 431,000