A trade magazine routinely checks the drive-through service times of fast-food restaurants. Upper A 90% confidence interval that results from examining 624 customers in one fast-food chain's drive-through has a lower bound of 166.6 seconds and an upper bound of 170.0 seconds. What does this mean?
A.
One can be 90% confident that the mean drive-through service time of this fast-food chain is between 166.6 seconds and 170.0 seconds.
B.
The mean drive-through service time of this fast-food chain is 168.3 seconds 90% of the time.
C.
One can be 90% confident that the mean drive-through service time of this fast-food chain is 168.3 seconds.
D.
There is a 90% probability that the mean drive-through service time of this fast-food chain is between 166.6 seconds and 170.0 seconds.

Jane moves from a house with 71 square feet of closet space to an apartment with 45.44 square feet of closet space. what is the percentage decrease of jane’s closet space?

Asystem of linear equations with more equations than unknowns is sometimes called an overdetermined system. can such a system be consistent? illustrate your answer with a specific system of three equations in two unknowns. choose the correct answer below. a. yes, overdetermined systems can be consistent. for example, the system of equations below is consistent because it has the solution nothing. (type an ordered pair.) x 1 equals 2 comma x 2 equals 4 comma x 1 plus x 2 equals 6 b. no, overdetermined systems cannot be consistent because there are fewer free variables than equations. for example, the system of equations below has no solution. x 1 equals 2 comma x 2 equals 4 comma x 1 plus x 2 equals 12 c. yes, overdetermined systems can be consistent. for example, the system of equations below is consistent because it has the solution nothing. (type an ordered pair.) x 1 equals 2 comma x 2 equals 4 comma x 1 plus x 2 equals 8 d. no, overdetermined systems cannot be consistent because there are no free variables. for example, the system of equations below has no solution. x 1 equals 2 comma x 2 equals 4 comma x 1 plus x 2 equals 24

Answer this two poles, ab and ed, are fixed to the ground with the of ropes ac and ec, as shown: two right triangles abc and edc have a common vertex c. angle abc and edc are right angles. ab is labeled 13 feet, ac is labeled 15 feet, ec is labeled 10 feet, and ed is labeled 4 feet.what is the approximate distance, in feet, between the two poles? 11.14 feet16.65 feet14.35 feet15.59 feet