Find the expected value.A new light bulb has been found to have a 0.02 probability of being defective. A shop owner receives 500 bulbs of this kind. How many of these bulbs are expected to be defective?
A. 20
B. 100
C. 10
D. 500
Answer: C
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Solve the problem.A salesperson has two job offers. Company A offers a weekly salary of $240 plus commission of 8% of sales. Company B offers a weekly salary of $480 plus commission of 4% of sales. What is the amount of sales above which Company A's offer is the better of the two?
A. $6000 B. $3000 C. $6100 D. $12,000
Find the number of elements in the sample space of the experiment.Selecting a marble from a bag containing 6 marbles and selecting a chip from a bag containing 7 chips.
A. 49 B. 42 C. 36 D. 13
Use Gauss-Jordan elimination to solve the linear system and determine whether the system has a unique solution, no solution, or infinitely many solutions. If the system has infinitely many solutions, describe the solution as an ordered triple involving variable z.5x + 2y + z =-112x - 3y - z=177x - y=12
A. no solution B. (-2, 0, -1) C. (1, -5, 0) D. (0, -6, 1)
The table shows Christine’s best javelin throws each year. Use a graphing utility to determine an equation for the line of best fit for the data. Use x = 0 for 1989.
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