Find the mean of the given values.75, 86, 60, 82, 57, 86, 58
A. 72
B. 86
C. 63
D. 75
Answer: A
Mathematics
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Find the equation of the least-squares regression line. Graph the line and data points on the same graph.
A. y = -150.7 + 6.8x
B. y = 150.7 - 6.8x
C. y = 140.4 - 6.2x
D. y = -140.4 + 6.2x
Mathematics
Write an equation to describe the variation. Use k for the constant of proportionality.w varies directly as b
A. w = 
B. w = kb
C. b = 
D. b = kw
Mathematics
SD( X )
The random variable X has the probability density function
over [0, ?).
Compute the following quantities.
Mathematics
Solve the problem.A population of birds in a small county can be modeled by the polynomial 
where x = 1 corresponds to July 1, x = 2 to July 2, and so on. For what days does f estimate the population to be 8550?
A. July 11th B. July 14th C. July 13th D. July 12th
Mathematics