Film streaming and tv screens: Compliments (if you are watching more netflix, hulu, etc you will care more about having a good tv to watch on)
Film streaming and movie tickets: Substitutes (you will either watch netflix or go to the movies, not both at the same time)
TV screens and movie tickets: Substitutes (if you are going to the movies, it doesn't matter what kind of TV you have)
Answer:
(a) 
(b) 
(c) X=4.975 percent
Explanation:
(a) Find the z-value that corresponds to 5.40 percent
.


Hence the net interest margin of 5.40 percent is 2.5 standard deviation above the mean.
The area to the left of 2.5 from the standard normal distribution table is 0.9938.The probability that a randomly selected U.S. bank will have a net interest margin that exceeds 5.40 percent is 1-0.9938=0.0062
(b) The z-value that corresponds to 4.40 percent is
The net interest margin of 4.40 percent is 0.5 standard deviation above the mean.
Using the normal distribution table, the area under the curve to the left of 0.5 is 0.6915
Therefore the probability that a randomly selected U.S. bank will have a net interest margin less than 4.40 percent is 0.6915
(c) The z-value that corresponds to 95% which is 1.65
We substitute the 1.65 into the formula and solve for X.




A bank that wants its net interest margin to be less than the net interest margins of 95 percent of all U.S. banks should set its net interest margin to 4.975 percent.
Answer:
D. demand is unitary elastic.
Explanation:
A unitary elastic demand means that the quantity demanded will change proportionally to any change in the price of the product or service. E.g. price decreases by 10%, then quantity demanded will increase by 10%.
The marginal revenue curve represents the additional revenue generated by selling one more unit. As the marginal revenue curve approaches 0, it means that selling one additional unit generates lower revenues.