Let x be a continuous random variable that is normally distributed, as indicated. Find the probability.
; 
Find P(37 < x < 85)
A. 0.7888
B. 0.8819
C. 0.8944
D. 0.8914
Answer: D
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Given y = f(u) and u = g(x), find dy/dx = f'(g(x))g'(x).y = sin u, u = 4x + 19
A. - 4 cos (4x + 19) B. - cos (4x + 19) C. 4 cos (4x + 19) D. cos (4x + 19)
In work with alternating current, complex numbers are used to describe current I, voltage E, and impedance Z. These three quantities are related by the equation E = IZ. Solve the equation E = IZ for the missing variable.I = 11 + 8i, Z = 9 + 2i
A. E = 115 + 94i B. E = 99 + 110i C. E = 99 + 16i D. E = 83 + 94i
Solve the problem.Some ordered pairs are listed in the table below. Create a scattergram of the points and draw a line that best fits the data. Are the variables x and y linearly related, approximately linearly related, or neither?
A. linearly related
B. approximately linearly related
C. linearly related
D. approximately linearly related
Solve the problem.Let C = 900 + 40x be the cost to manufacture x items. Find the average cost per item to produce 30 items.
A. $1253 B. $70 C. $705 D. $698