Find a 95% confidence interval for the true population proportion.In a survey of 227 adults, 28% said that they had tried acupuncture at some point in their lives.
A. 24.7% to 31.3%
B. 27.9% to 28.1%
C. 27.6% to 28.4%
D. 21.4% to 34.6%
Answer: D
Mathematics
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Perform the matrix operation.Given A = 
and B = 
, find AB.
A. 
B. 
C. 
D. 
Mathematics
Identify the intervals where the function is changing as requested.Constant
A. (-2, -1) B. (-1, 1) C. (2, ?) D. (1, 2)
Mathematics
Find the average rate of change for the function between the given values.f(x) = 2x3 + 2x2 + 1; from -3 to 6
A. 
B. 90
C. 60
D. 
Mathematics
Evaluate the determinant of the matrix below to determine which of the following makes the equation true.
A. 
B. 
C. 
D. 
E. 
Mathematics