A characteristic of all confidence intervals is that_____

A、a confidence interval always includes the population parameter.

B、a confidence interval always increases in width as the sample size is increased.

C、a confidence interval cannot include a value of 0.

D、a confidence interval always increases in width as the level of confidence

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更多“A characteristic of all confid…”相关的问题

第1题

It can be inferred from the passage that a characteristic of the ethnological research on Native Americans conducted during the nineteenth century was the use of which of the following?

A．Investigators familiar with the culture under study

B．A language other than the informant’s for recording life stories

C．Life stories as the ethnologist’s primary source of information

D．Complete transcriptions of informants’ descriptions of tribal beliefs

E．Stringent guidelines for the preservation of cultural data

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第2题

Which of the following is NOT listed by the author as a characteristic of the planet Mars that would make colonization difficult?

A．There is little liquid water.

B．Daytime temperatures are dangerously high.

C．The Sun's rays are deadly.

D．Nighttime temperatures are extremely low.

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第3题

which of the following is not a characteristic of british government?

A. It is both a parliamentary democracy and a constitutional monarchy.

B. It offers the Queen high political status and supreme power.

C. It is the oldest representative democracy in the world.

D. It has no written form. of constitution.

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第4题

A characteristic of American culture that has become almost a tradition is to respect the self-made man—the man who has risen to the top through his own efforts, usually beginning by working with his hands. While the leader in business or industry or the college professor occupies a higher social position and commands greater respect in the community than the common laborer or even the skilled factory worker, he may take pains to point out that his father started life in America as a farmer or laborer of some sort. This attitude toward manual (体力的)labor is now still seen in many aspects of American life.

One is invited to dinner at a home that is not only comfortably but even luxuriousl(豪华地)furnished and in which there is every evidence of the fact that the family has been able to afford foreign travel, expensive hobbies, and college education for the children; yet the hostess probably will cook the dinner herself, will serve it herself and will wash dishes afterward, furthermore the dinner will not consist merely of something quickly and easily assembled from contents of various cans and a cake or a pie bought at the nearby bakery. On the contrary, the hostess usually takes pride in careful preparation of special dishes. A professional man may talk about washing the car, digging in his flowerbeds, painting the house. His wife may even help with these things, just as he often helps her with the dishwashing. The son who is away at college may wait on table and wash dishes for his living, or during the summer he may work with a construction gang on a highway in order to pay for his education.

From paragraph 1, we can know that in America______．

A．people tend to have a high opinion of the self-made man

B．people can always rise to the top through their own efforts

C．college professors win great respect from common workers

D．people feel painful to mention their fathers as labors

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第5题

A characteristic of the Venus Flytrap that is exceptional in the botanical world

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第6题

Which of the following is NOT a characteristic of British government?

A.It offers the Queen high political status and supreme power.