A DVD spins while a DVD player reads information from it. When it begins playing, a DVD makes revolutions in of a second. What is the unit rate at which the DVD spins? A. 2/21 revolutions per second

B. 6/7 revolutions per second

C. 7/6 revolutions per second

D. 21/2 revolutions per second

The vice president of programming at nbc is finalizing the prime-time schedule for the fall. she has decided to include a hospital drama but is unsure which of two possibilities to select. she has a pilot called the surgeon and another called critical care. to her make a final decision, a sample of 20 viewers from throughout the united states was asked to watch the two pilots and indicate which show they prefer. the results were that 12 liked the surgeon, 7 liked critical care, and one had no preference. state the decision rule, using the 0.10 significance level. h0: π = 0.50 h1: π ≠ 0.50 1. reject h0 if number of + signs is either < = or > = 2. what is your decision regarding h0? is there a preference for one of the two shows?