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【单选题】
已知某区10岁男生立定跳远的平均成绩为150.6厘米,从该区随机抽测20人的跳远平均成绩为167.1厘米,标准差26.41厘米,请问想要知道“这20人成绩在10岁男生中是否属于较好的水平?”应该选用哪种检验方法?
A.
配对T检验
B.
两个独立样本T检验
C.
样本均值与总体均值的T检验
D.
卡方检验
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参考答案：
举一反三
【单选题】Which of the following statements is not a reason to explain the rapid growth of capitalism after the Civil War ______.
A.
The U.S. federal government put low taxes on foreign imports.
B.
There was enough labor supply for the development of American \r\nindustries.
C.
Science and invention played a key role in accelerating America’s \r\nindustrial development.
D.
With the war over, both foreign and domestic capital became available for \r\ninvestment.
查看完整题目与答案
【简答题】Prashant Mandal shares a small house with his wife and four kids, and survives on less than $2 a day. Yet,despite Mandal' s modest income, he spends 20 percent of his income on solar energy, an expen...
查看完整题目与答案
【单选题】听力原文： The United States says it has found a way to resolve the financial dispute that's held up negotiations with North Korea over its nuclear program. The funds amounting to $ 25 million have been fr...
A.
$12,000,000
B.
$20,000,000
C.
$24,000,000
D.
$25,000,000
查看完整题目与答案
【单选题】面料的染色牢度一般分为5级,评级时级数高表示( )
A.
色牢度不好
B.
色牢度好
C.
没有关系
D.
说不清
查看完整题目与答案
【单选题】面料的染色牢度一般分为5级，评级时级数高表示（  ）。
A.
色牢度好
B.
色牢度不好
C.
说不清
D.
没有关系
查看完整题目与答案
【简答题】Directions: Read the following text and choose the most suitable heading from A-F for each paragraph. There is one extra heading which you do not need. A．Leave others a deep impression B．Be a pleasa...
查看完整题目与答案
【单选题】Passage IV Instant Feedback Recently, many organizations have implemented feedback loops that allow them to capture feedback at the point of experience. For example, National Express, one of the UK ’ ...
A.
2. Which of the following statements is NOT true according to the second paragraph? It is not easy to focus your attention on the right key areas in customer service.
B.
It is difficult for a company to collect a lot of meaningful KPIs.
C.
It is challenging to select KPIs which reflect your overall strategy.
D.
Those KPIs, which will deliver the most value to the overall objective, should be chiefly concerned.
查看完整题目与答案
【简答题】The key to being a winner is to have desire and a goal from which you refuse to be deterred (被吓住). That desire fuels your dreams and the special goal keeps you focusing. 【S1】______ Deeply down we all ...
查看完整题目与答案
【单选题】About the music types, which of the following is not true?
A.
Improvisation is a key element of country music.
B.
Common instruments used in Jazz music are trumpet, piano, and saxophone.
C.
Rock&Roll has bold expression and passion music rhythm expression of emotion.
D.
R&B is a genre of popular African American music that originated in the 1940s.
查看完整题目与答案
【多选题】下列哪些是有关国际贸易术语的国际贸易惯例
A.
《1932年华沙-牛津规则》
B.
《1941年美国对外贸易定义修订本》
C.
《海牙规则》
D.
《2000年国际贸易术语解释通则》
查看完整题目与答案
相关题目：
【单选题】Which of the following statements is not a reason to explain the rapid growth of capitalism after the Civil War ______.
A.
The U.S. federal government put low taxes on foreign imports.
B.
There was enough labor supply for the development of American \r\nindustries.
C.
Science and invention played a key role in accelerating America’s \r\nindustrial development.
D.
With the war over, both foreign and domestic capital became available for \r\ninvestment.
查看完整题目与答案
【简答题】Prashant Mandal shares a small house with his wife and four kids, and survives on less than $2 a day. Yet,despite Mandal' s modest income, he spends 20 percent of his income on solar energy, an expen...
查看完整题目与答案
【单选题】听力原文： The United States says it has found a way to resolve the financial dispute that's held up negotiations with North Korea over its nuclear program. The funds amounting to $ 25 million have been fr...
A.
$12,000,000
B.
$20,000,000
C.
$24,000,000
D.
$25,000,000
查看完整题目与答案
【单选题】面料的染色牢度一般分为5级,评级时级数高表示( )
A.
色牢度不好
B.
色牢度好
C.
没有关系
D.
说不清
查看完整题目与答案
【单选题】面料的染色牢度一般分为5级，评级时级数高表示（  ）。
A.
色牢度好
B.
色牢度不好
C.
说不清
D.
没有关系
查看完整题目与答案
【简答题】Directions: Read the following text and choose the most suitable heading from A-F for each paragraph. There is one extra heading which you do not need. A．Leave others a deep impression B．Be a pleasa...
查看完整题目与答案
【单选题】Passage IV Instant Feedback Recently, many organizations have implemented feedback loops that allow them to capture feedback at the point of experience. For example, National Express, one of the UK ’ ...
A.
2. Which of the following statements is NOT true according to the second paragraph? It is not easy to focus your attention on the right key areas in customer service.
B.
It is difficult for a company to collect a lot of meaningful KPIs.
C.
It is challenging to select KPIs which reflect your overall strategy.
D.
Those KPIs, which will deliver the most value to the overall objective, should be chiefly concerned.
查看完整题目与答案
【简答题】The key to being a winner is to have desire and a goal from which you refuse to be deterred (被吓住). That desire fuels your dreams and the special goal keeps you focusing. 【S1】______ Deeply down we all ...
查看完整题目与答案
【单选题】About the music types, which of the following is not true?
A.
Improvisation is a key element of country music.
B.
Common instruments used in Jazz music are trumpet, piano, and saxophone.
C.
Rock&Roll has bold expression and passion music rhythm expression of emotion.
D.
R&B is a genre of popular African American music that originated in the 1940s.
查看完整题目与答案
【多选题】下列哪些是有关国际贸易术语的国际贸易惯例
A.
《1932年华沙-牛津规则》
B.
《1941年美国对外贸易定义修订本》
C.
《海牙规则》
D.
《2000年国际贸易术语解释通则》
查看完整题目与答案
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