Tell whether the sampling strategy will result in a random sample from the population under consideration. If it is not random, explain why it is not.At the opening night of a play, the owner of the theater would like to offer free theater membership to a few audience members. The owner announces that each person seated in the middle seat of a row will receive free membership to the theater. The theater consists of ten rows each with nineteen seats. There are no empty seats that night.
What will be an ideal response?
This is not a random sample. The sample will not include any groups of friends or relatives who are seated together.
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Solve the problem.Find the magnitude of the torque in foot-pounds at point P for the following lever:
= 3 in. and 
= 20 lb
A. 9.72 ft-lb B. 4.53 ft-lb C. 2.11 ft-lb D. 60 ft-lb
The primary reason a firm holds marketable securities is because they:
A. substitute for its long-term debt. B. offer a place to temporarily invest cash balances to earn high rates of return. C. are useful for managing credit sales. D. can be used to help speed up collections of its accounts payable. E. permit the firm to earn positive returns on cash that is not needed to pay bills in the current period.
Find the product.
2
A. 4x2 + 4xy + 1y2 B. 4x2 + 1y2 C. 4x2 + 2xy+ 1y2 D. 2x2 + 4xy + 1y2
Identify the terms in the polynomial.-2t7 + 6t4 - 4t2 + 3
A. 2t7, 6t4, -4t2, 3 B. -2, t7, 6, t4, -4, t2, 3 C. -2t7, 6t4, 4t2, 3 D. -2t7, 6t4, -4t2, 3