展开全部

题目列表

题目内容
According to the recorded times, which customer had the greatest ratio of waiting time to service time?
What was the range of the recorded service times, in minutes, for the 15 customers?
2$$\sqrt{2}$$-1, $$\sqrt{2}$$-1, 1+$$\sqrt{2}$$, 1- $$\sqrt{2}$$, $$\sqrt{2}$$

What is the median of the numbers shown?
y < x

y=rs

z=rxy

If r, s, x, y and z are positive even integers that are related by the system shown, what is the median of the integers r, s, x, y and z?
The sum of 101 consecutive even integers is 20,200.

Quantity A

The average (arithmetic mean) of the 101 integers

Quantity B

The median of the 101 integers


R={3, 4, 7, 9}

T={2, 5, 8}

If a number r is to be chosen from set R and a number t is to be chosen from set T. what is the range of all possible values of $$\frac{t}{r}$$?


The random variable X has the standard normal distribution with a mean of 0 and a standard deviation of 1, as shown. Probabilities, rounded to the nearest 0.01, are indicated for the six intervals shown. The random variable Y has a normal distribution with a mean of 2 and a standard deviation of 1. Using the probabilities shown, approximately how much greater is the probability that the value of Y is between 1 and 2 than the probability that the value of X is between 1 and 2?
In a survey, employees who want to switch jobs were asked what issues were most important in choosing another job. Half of those surveyed said "salary" and 35% said "location". If 32 percent of those surveyed said both "salary" and "location", what percent said either "salary" or "location" but not both?

Quantity A

$$\frac{100!}{99!}$$

Quantity B

$$\frac{ (100!-99!)}{98!}$$


In a university, a certain committee consists of 6 faculty members, 4 administrators and 3 students. A subcommittee of 5 members will be selected from the committee. Professor Smith, who is one of the 6 faculty members, and Ms. Wilson, who is one of the 4 administrators must be on the subcommittee. The other 3 subcommittee members will be selected at random from the rest of the committee. How many different 5-member subcommittees can be selected?

Quantity A

The number of ordered triples ($$x_1$$, $$x_2$$, $$x_3$$), where $$x_1$$, $$x_2$$ and $$x_3$$ are non-negative integers such that $$x_1$$+$$x_2$$+$$x_3$$=9

Quantity B

55


As a publisher and a businessman, Guillaume Rouille was ___________: he included a full set of portraits of the Ottoman Sultans in his encyclopedia to cater to the public thirst for information concerning the expanding empire of the Turks.
An affinity for (i)___________ is a characteristic of Bynum`s work and of her rhetorical strategy as a historian, and it is often both refreshing and illuminating. But this predilection for (ii)___________ can be vexing, too, by appearing to eschew necessary distinctions.
Baron's book implores scientists to present their work in ways that are accessible to the general public in order to save the world at large from scientific illiteracy, ______________ that is echoed in other recent publications.
The distribution of large carnivores often depends on management efforts rather than on human population density as such; indeed biological variables, such as habitat loss, are generally _____________ carnivore prevalence than human density is.
Recent academic work suggests that people in difficult circumstances who believe those circumstances to be irreversible are happier than are people who think their condition may be (i)____________. In such cases, ironically, hope may not be (ii)____________ of misery.
We tend to perceive the classification of 200 animals into scientific categories such as species and subspecies as ______________, but the definition of many species is still hotly debated among biologists and conservationists.
By using (i) _____________ prose throughout, the contributors to this anthology have been able to make their subject seem (ii) _____________ in the extreme-of concern only to one another.
The painter Fu Baoshi lived and worked through a tumultuous period in Chinese history, _________ by exceptional talent and a steely dedication to his art.
With respect to environmental issues, most legal scholarship tends to envision politics as the pursuit of already fixed interests, a view that (i)________ the ability of political communities to (ii)________ their values and their interests through the process of democratic deliberation.

共收录:

25000 +道题目

199本备考书籍

最新提问