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Quantity A

The standard deviation of the distribution of X

Quantity B

The standard deviation of the distribution of Y


What is the greatest possible area of a rectangular region whose perimeter is 60?
At a research organization, a committee consists of 3 members from department A, 3 members from department B, and 3 members from department C. From the committee, 2 different members will be selected at random to attend a conference. What is the probability that both of the members selected will be from department C?
For all bookstores in 1996, approximately what was the average (arithmetic mean) book sales per store?
A certain distribution of 6 temperatures $$t_1$$, $$t_2$$, $$t_3$$, $$t_4$$, $$t_5$$, $$t_6$$ has a standard deviation of 2.14 degrees Celsius. Which of the following distributions of temperatures must also have a standard deviation of 2.14 degrees Celsius?

Indicate all such distributions.
In the xy-plane, which of the following best represents the graph of $$y=(x-1)^2-8$$?

$$1 \lt x+y$$

Quantity A

$$x^2+y^2$$

Quantity B

$$1$$




For a population of 1,000,000 used computer batteries, the distribution of the durations that a fully charged battery will power a computer is approximately normal with mean 3.5 hours.The manufacturer of the batteries estimates that 20,000 of the batteries will have a power duration greater than 5.1 hours. Of the following,which is the best estimate of the standard deviation, in hours, of the distribution?
Three of the vertices of parallelogram RSTU in the xy-plane are R(-3, -2), S(1, -5), and T(9, 1). Which of the following could be the x-coordinate of vertex U?
Of the following, which best represents the graph in the xy-plane of the equation $$y=(x^2+1)(x-3)$$?



Which of the following is closest to the fraction of the families with students in four-year public colleges who do not use income or savings as the main source to pay for college expenses?
S is the set of integers between 100 and 900, inclusive, that are multiples of 30. What is the median of the integers in S?
What is the nearest integer to the value of $$\sqrt[3]{27+64}$$?


According to the data in the table, what percent of the children had access to a computer either at home, at school, or both?
Brand A cheese is sold at a cost of $$$4.00$$ per pound. Brand B cheese is sold at a cost of $6.00 per pound.

Quantity A

The cost of $$\frac{1}{2}$$ pound of Brand A cheese at this rate

Quantity B

The cost of $$\frac{1}{4}$$ pound of Brand B cheese at this rate


The function $$f$$ and $$g$$ are defined for all numbers $$x$$ by $$f(x)=1-2x$$ and $$g(x)=x^2-1$$.

Quantity A

$$f(g(f(-2)))

Quantity B

$$g(f(g(-2)))


List L consists of 1,349 different positive values, and list K consists of the reciprocals of the 1,349 values in L.

Quantity A

The median of L

Quantity B

The reciprocal of the median of K


$$n$$ is a positive two-digit integer.

Quantity A

The greatest prime factor of $$n$$

Quantity B

The greatest prime factor of $$2n+1$$


$$n=(2^a)(3^a)$$, where $$a$$ is a positive integer.

Quantity A

The number of different positive factors of $$n$$

Quantity B

$$a^2$$


A manager oversees 7 employees, including 1 new employee, assigning one or more of them to work on various tasks. The manager will assign 2 employees to work together on a certain task. Of all 21 possible pairs of employees that the manager can choose from the 7 employees to work on the task, the number of pairs that will not include the new employee is how many greater than the number of pairs that will include the new employee?

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