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Shorty's Muffler advertises it can install a new muffler in 30 minutes or less. However, the work standards department at corporate headquarters recently conducted a study and found that 20 percent of the mufflers were not installed in 30 minutes or less. The Maumee branch installed 50 mufflers last month. If the corporate report is correct:
a. How many of the installations at the Maumee branch would you expect to take more than 30 minutes?
b. What is the likelihood that fewer than eight installations took more than 30 minutes?
c. What is the likelihood that eight or fewer installations took more than 30 minutes?
d. What is the likelihood that exactly 8 of the 50 installations took more than 30 minutes?
If the account earns interest at the rate of 7%/year compounded quarterly, how much will Luis have in his account at the time of his retirement?
The marketing research department for a company that manufactures and sells "notebook" computers established the following price-demand and revenue functions.
snow began to fall during the morning of february 2 and continued steadily into the afternoon. at noon a snowplow
This question is from Mathematics as well as it is about calculating differentiation in trigonometry.
What is the number in cell A3? Use mental math to find the sum of each row, column, and diagonal. What did you discover about all of the sums?
A car was purchased for $32,800. The value of the car decreases by $4,300 per year for each of the first seven years. Write a function that describes the value of the car, f(x), after x years where 0 ≤ x ≤ 7.
The volume of a rectangular prism is given by the formula V = lwh. What are the general dimensions of the prism if the volume is 6x3 +9x2 - 6x? You will not have an exact dimension but rather an expression that represents them.
A triangle with area of 30 sq. in. is cut form the corner of a square of side 10 in. If the centroid of the remaining region is 4 inches from the left side, how far is it from the bottom?
What situations would make rectangular, cylindrical or spherical integration best? Is integration over other coordinate systems possible or ever ideal?
Fishing and Probability. Last week, Pat caught n distinct fish from Lake Nebagamon, but threw all of them back at the end of the fishing trip. Next week, Pat will go fishing again at the same place,
How does the answer change if in addition you are told that n1→ is not in Ac, and |c-1(n)| > |c-1(1)|? In both cases, give both a lower bound on the minimum number and also an example showing it is best possible.
The volume of a cone is 218 cubic centimeters and the height of the cone is 13 centimeters. What is the radius of the cone to the nearest whole number?
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