展开全部

题目列表

题目内容
23, 21, 20, 32, 34, 35, 26, 31, 30, 24

For which integer in the list above are 90 percent of the integers in the list less than that integer?
For a certain normal distribution, the value 15.6 is 2 standard deviations below the mean of the distribution and the value 26.1 is 3 standard deviations above the mean of the distribution. What is the mean of the distribution?


According to the table, the percent of households in 1980 with neither a microwave oven nor a central air conditioner must be in which of the following inclusive intervals?
$$C_1$$, $$C_2$$, $$C_3$$, ......,$$C_K$$, ......

The sequence shown above is defined by $$C_1$$=7 and $$C_{K+1}$$= $$\frac{1}{7}$$ $$C_K$$, for each positive integer k

Quantity A

$$C_{12}$$

Quantity B

($$49^{7}$$)$$C_{26}$$


-1, 2, -3, 4, ... , $$a_{n}$$, ................... , -99, 100

In the finite sequence, $$a_{n}$$=$$(-1)^{n}$$*n for all integers n between 1 and 100, inclusive.

Quantity A

The sum of the terms in the sequence

Quantity B

51


Quantity A

20!+19!+18!

Quantity B

400(18!)


In a probability experiment, R, S, and T are events such that P(S)=P(T)=x, P(R)=kx, and P(R or S) < P(S or T), where k and x are positive numbers. Events R and S are mutually exclusive, and events S and T are independent.

Quantity A

k

Quantity B

1-x


Aboriginal people of Victoria, Australia, neither rejected Western material culture nor demonstrated an obsession with it; in fact, Western artifacts such as pipes and handkerchiefs were appreciated for their symbolic rather than their _________ value.
Many elected officials have (i)__________ into believing that the new reforms represent a solution rather than (ii)__________ of the problem. Unfortunately, such self-deception is not uncommon among politicians.
At first glance, each of the stories in the anthology seemed (i)__________; upon closer inspection of their protagonists, implied morals, and fantasy elements, however, subtle similarities among the stories emerged to (ii)_________ this initial observation.
Robin's words were not without emotion: they retained their level tone only by a careful ______________ extremes.
Climate change is posited to be a frequent factor in mass extinctions by some scientists who speculate that minor climate shifts can trigger a catastrophic cascade of effects. Although this pattern is (i) _____________ in that it confirm warnings about our own possibly dire future, it is also somehow (ii) _____________, as it sets forth a context for today's turbulent weather as (iii) _____________ in a natural, cyclical process.
The primary purpose of the passage is to
The author of the passage takes the “significant changes” to be an indication of which of the following?
Which of the following numbers satisfy their sum of reciprocals is either less than $$\frac{1}{3}$$ or greater than $$\frac{1}{2}$$ ?

Indicate all such numbers.
The operation ⭕️ is defined by x ⭕️ y=$$\frac{1}{x}$$+$$\frac{1}{y}$$ for all positive numbers x and y. Which of the following statements must be true for all positive numbers m and r?

Indicate all such statements.
In the xy-plane, the point (3p, 5p-1) lies on the line with equation y=-$$\frac{1}{2}$$x-$$\frac{5}{3}$$. What is the value of p?

Give your answer as a fraction.
Genetic diversity is the raw material of evolution including the domestication of plants, yet the domestication process typically ____________ diversity because the first domesticates are derived from a very small sample of the individual plants.

Quantity A

The number of integer solutions of the equation $$3x^{2}+5x-2=0$$

Quantity B

1




In a certain survey, 40 percent of the people surveyed own at least one dog, 30 percent own at least one cat, and 40 percent own neither a dog nor a cat. Of those surveyed that own at least one dog, what percent also own at least one cat?

共收录:

25000 +道题目

199本备考书籍

最新提问