X is a continuous random variable with mean ?. Find ?, and then find P(X ? ?) ifX is an exponential random variable with ? = 4.
A. ? = 4; P(X ? ?) ? 0.632
B. ? = 4; P(X ? ?) ? 0.061
C. ? = 0.25; P(X ? ?) ? 0.061
D. ? = 0.25; P(X ? ?) ? 0.632
Answer: A
You might also like to view...
Solve the problem.The following table shows the rate of water flow (in gal/min) from a stream into a pond during a 30-minute period after a thunderstorm. Use the Trapezoidal Rule to estimate the total amount of water flowing into the pond during this period. Round your answer to the nearest gallon.
A. 7050 gal B. 7725 gal C. 7733 gal D. 8725 gal
Solve the problem.The accompanying figure shows the graph of y = -x2 shifted to a new position. Write the equation for the new graph.
A. y = -(x + 3)2 B. y = -x2 - 3 C. y = -(x - 3)2 D. y = -x2 + 3
Solve the equation on the interval 0 ? ? < 2?.1 - sin ? = 
A. 
B. 
C. 
D. 
Solve the problem.Suppose a nonhomogeneous system of 15 linear equations in 17 unknowns has a solution for all possible constants on the right side of the equation. Is it possible to find 3 nonzero solutions of the associated homogeneous system that are linearly independent? Explain.
What will be an ideal response?