4. extended response: 10 point rubric. show all work. calculator allowed, but be sure to show the work. find the final cost of a playstation 4 which has a regular price of $297.48, but is on sale until the 4 of july for 15% off. you also get a discount of an additional 10% off because you said you are a student of mrs. vanostrand. the sales tax rate in allegheny county where you are purchasing it is 7 44%. find the lowest sale price, the sales tax, and the total cost. (where necessary, round to the nearest cent). show work: (5 points for work)

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?