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A survey claims that 9 out of 10 doctors recommend...

A survey claims that 9 out of 10 doctors recommend aspirin for their patients with headaches. To test this claim against the alternative that the actual proportion of doctors who recommend aspirin is less than 0.90, a random sample of 100 doctors was selected. Suppose that the test statistic is –2.20. Can we conclude that H0 should be rejected at the (a) A survey claims that 9 out of 10 doctors recommend = 0.10, (b)= 0.05, and (c)= 0.01 level of Type I error？

A、(a) yes; (b) yes; (c) yes

B、(a) no; (b) no; (c) no

C、(a) no; (b) no; (c) yes

D、(a) yes; (b) yes; (c) no

提问人：网友scott298 发布时间：2022-01-07

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第2题

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第3题

How Happy is Britain？ What makes you happy？ That's...

How Happy is Britain？ What makes you happy？ That's a question British Prime Minister David Cameron is asking the nation in a survey this year, as part of a drive to improve Britons' lives beyond pure 1 gain. As the global recession continues, Mr Cameron says he is seeking a better measure of progress than GDP alone. He claims economic studies often focus too much on standard of life rather than 2 of life. The problem is that assessing happiness is a slippery subject. It is easier to measure something 3 like a person's income than a 4 , less tangible factor like well-being. Critics say the 2m pounds (20m yuan) scheme will not produce any meaningful results. Others suggest it is unwise to carry out a survey into the nation's happiness just as the government 5 the biggest public spending cuts in decades. Mr Cameron himself admits that it is easy to brand his scheme “woolly” and “ 6 ”, but it is not without precedent. Canada has an Index of Well-being which looks at how things like money and education affect health and the sense of 7 . And the Kingdom of Bhutan has used its index of Gross National Happiness (GNH) since the early 1970s as a tool to help 8 . So what kind of answers is he likely to get？ While the full survey begins later this year, respondents to an initial consultation have already listed their top 9 . Job security, good health and relationships with family members are what matter most to people in the UK, according to the 10 . In fact, having a job was listed as more important than being paid a high salary. So perhaps there is truth in the old adage that “money can't buy happiness”. An idea David Cameron may find solace in as he tries to find a way out of the recession.

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第4题

听力原文：Gay women working in the City of London's financial services sector are three tim

听力原文： Gay women working in the City of London's financial services sector are three times more likely than male counterparts to keep quiet about their sexuality, according to a survey published on Tuesday. The study by recruitment firm The Blomfield Group found the City of London had made progress in terms of diversity, but remained a challenging place to work for gay people. "The reluctance of women to come out as lesbians possibly reflects the fact that women already feel they have to fight hard to maintain equality with men," said Keith Robinson, managing director at Origin HR, part of the Blomfield Group. The survey revealed an increase in the number of financial services employees who identified themselves as gay. But in the survey women were three times more likely than men not to disclose their sexuality.

The City of London still has a reputation as a macho environment dominated by heterosexual white males. But investment banks are trying to change the City's culture after a string of discrimination lawsuits in the United States and now in Britain. They also fear losing out if they cannot attract the most talented recruits regardless of race, sex or sexuality. The banks themselves operate gay and women's networks and try to promote diversity in recruitment programs. There are also industry-wide networks such as Out in the City, the Interbank Gay & Lesbian Network, and City Pink, as well as women's networks such as the City Women's Club. Three of the top 10 organizations in gay tights lobby group Stonewall's Corporate Equality Index are now investment banks. A series of high-profile discrimination lawsuits in the City of London have highlighted that there is still work to do. Peter Lewis, a former top banker at HSBC Holdings, is currently seeking to appeal an employment tribunal ruling that he was not sacked from his job because he was gay. Lewis had sued HSBC for about 5 million pounds (＄9.3 million), claiming he was dismissed because of his homosexuality. He lost his lawsuit against the bank in May, when the tribunal rejected his claim of unfair dismissal based on sexual orientation. The tribunal did, however, uphold four out of 16 claims that Lewis made against the bank. HSBC is itself seeking leave to appeal against these four. Claire Bright, a senior executive at HBOS Plc, filed an 11 million pound sex discrimination claim against the UK bank last year. HBOS said that in the event of a tribunal hearing it would vigorously defend its position and that an internal investigation had not upheld Bight's allegation. The Blomfield survey of 20,392 candidates for City roles found that 6.3 percent identified themselves as gay, up from 5.9 percent two years ago. This percentage represents about 55,000 out of the 900,000 or so people working in banking, finance and insurance in London, the survey said. "The City has some way to go. There is still room for another 35,000 gay or lesbian employees before the industry matches the mix in London's general population," it said. "The extent to which people are 'out' in their firms is far smaller than the number who privately acknowledges they are homosexual."

Which of the following is NOT hue about the females working in City of London？

A．They are trying their best to fight for gender equality in their work.

B．They are less vocative of their sexual orientation than men.

C．Their working environment gives little tolerance to homosexual people.

D．Most of their colleges are heterosexual white males.

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第5题

听力原文：South Korea has confirmed it will move its future seat of government to a rural s

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The government plans to begin buying land for the 7,100-hectare site next year, with construction scheduled to start in 2007 and end in 2030. The government chose the site of the new capital, which has yet to be named, over two other areas because of its superior transport and environmental conditions, officials said. The presidential office and 72 other key state institutions will be located there. But other organizations, such as the National Assembly and the Supreme Court will decide whether to move or not.

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But the relocation—which could cost as much as $94 billion—has sparked fierce debate among rival parties, who have raised questions about the efficiency and feasibility of the project. The main opposition Grand National Party claims the government is recklessly pushing what it says is an unrealistic plan without popular support. A media survey showed that more than half of the public are opposed to the plan, citing its high costs compared with its expected effects.

Which of the following is NOT true about the new capital according to the report？

A．It's in the center area of South Korea.

B．It has excellent transport and environmental conditions.

C．The relocation will cost $94 million.

D．It is not named yet.

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第6题

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Hold arms slightly away from body, with elbows bent so that forearms are approximately parallel to the ground. Occasionally shaking and relaxing the arms and shoulders will help reduce the tightness that some times develops while jogging. Periodically taking several deep breaths and blowing them out completely will also help you to relax.

It is best to land on the heel of the foot and rock forward so that you drive off the ball of the foot for your next step.. If this proves difficult, try a more flat - footed style. Jogging only on the balls of the feet, as in sprinting, will produce severe leg soreness.

Keep steps short, letting foot strike the ground beneath the knee instead of reaching to the front. Length of stride should vary with your rate of speed. Breathe deeply with mouth open. Do not hold breath. If for any reason you become unusually tired or uncomfortable, Slow down, walk, or stop.

How many adult Americans jog for exercise according to The National Adult Physical Fitness Survey ？

A．5.5 million.

B．6.5 million.

C．7.5 million.

D．8.5 million.

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第7题

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So, what does it take to motivate people to stick to the path set by their conscious brain？ How can good choices be made to seem more appealing than bad ones？ The problem stumps doctors, public-health officials and weight-loss experts, but one solution may spring from an unlikely source. Meet your new personal trainer: your boss.

American businesses have a particular interest in personal health, since worker illness costs them billions each year in insurance claims, sick days and high staff turnover. A 2008 survey of major US employers found that 64% consider their employees' poor health decisions a serious barrier to affordable insurance coverage. Now some companies are tackling the motivation problem head on, using tactics drawn from behavioral psychology to nudge their employees to get healthy.

"It's a bit paradoxical that employers need to provide incentives for people to improve their own health," says Michael Follick, a behavioral psychologist at Brown University and president of the consultancy Abacus Employer Health Solutions.

Paradoxical, maybe, but effective. Consider Amica Mutual Insurance, based in Rhode Island. Arnica seemed to be doing everything right: it boasts an on-site fitness center at its headquarters. It pays toward Weight Watchers and smoking-cessation help, gives gift cards to reward proper prenatal care and offers free flu shots each year. Still, in the mid-2000s, about 7% of the company's insured population, including roughly 3 100 employees and their dependents, had diabetes. "We manage risk. That's our core business," says Scott Boyd, Amica's director of compensation and benefits. But diabetes-related claims from Arnica employees had doubled in four years. "We thought, OK," Boyd says now, "we have to manage these high-risk groups a little better. "

In the first paragraph, we can infer that the Americans ______.

A．vow to diet in the new year

B．fear to lose weight

C．have poor decision in keeping healthy diet

D．succeed in losing weight

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第8题

Recent research has claimed that an excess of positive ions in the air can have an ill eff

ect on people' s physical or psychological health. What are positive ions？ Well, the air is full of ions, electrically charged particles, and generally there is a rough balance between the positive and the negative charges (电荷). But sometimes this balance becomes disturbed and a larger proportion of positive ions are found. This happens naturally before thunderstorms, earthquakes or when winds such as the Mistral, Foehn, Hamsin or Sharav are blowing in certain countries. Or it can be caused by a build-up of static electricity indoors from carpets or clothing made of man-made fibres, or from TV sets, duplicators or computer display screens.

When a large number of positive ions are present in the air, many people experience unpleasant effects such as headaches, fatigue, irritability, and some particularly sensitive people suffer nausea or even mental disturbance. Animals are also found to be affected, particularly before earthquakes; snakes have been observed to come out of hibernation, rats to flee from their burrows, dog howl and cats jump about unaccountably. This has led the U.S. Geographical Survey to fund a network of volunteers to watch animals in an effort to foresee such disasters before they hit vulnerable areas, such as California.

Conversely, when large numbers of negative ions are present, people have a feeling of well-being. Natural conditions that produce these large amounts are near the sea, close to waterfalls or fountains, or in any place where water is sprayed, or forms a spray. This probably accounts for the beneficial effect of a holiday by the sea, or in the mountains with tumbling streams or waterfalls.

To increase the supply of negative ions indoors, some scientists recommend the use of ionisers: small portable machines which generate negative ions. They claim that ionisers not only clean and refresh the air, but also improve the health of people sensitive to excess positive ions. Of course, there are the detractors, other scientists, who dismiss such claims and are skeptical about negative/positive ion research. Therefore people can only make up their own minds by observing the effects on themselves, or on others, of a negative rich or poor environment. After all, it is debatable whether depending on seismic (地震的) readings to anticipate earthquakes is more effective than watching the cat.

According to the passage, static electricity can be caused by ______.

A．washing machines

B．wearing clothes made of natural materials

C．walking on artificial floor coverings

D．listening to the tape recorder

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第9题

Recent research had claimed that an excess of positive ions in the air could have an ill e

ffect on people's physical or psychological health. What are positive ions？ Well, the air is full of ions, electrically charged particles, and generally there is a rough balance. If the balance becomes disturbed and a larger proportion of positive ions are found. This happens naturally before thunderstorms, earthquakes or when winds such as the Mistral, Foehn, Hamsin or Sharav are blowing in certain countries. Or it can be caused by a build-up of static electricity indoors from carpets or clothing made of man-made fibers, or from TV sets, duplicators or computer display screens.

When a large number of positive ions are present in the air many people experience unpleasant effects such as headaches, fatigue, irritability, and some particularly sensitive people suffer nausea or even mental disturbance. Animals are also found to be affected, particularly before earth- quakes; snakes have been observed to come out of hibernation, rats to flee from their burrows, dogs howl and cats jump about unaccountably. This has led the US Geographical Survey to fund a network of volunteers to watch animals in an effort to foresee such disasters before they hit vulnerable areas such as California.

Conversely, when large numbers of negative ions are present, then people have a feeling of well-being. Natural conditions that produce these large amounts are near the sea, close to waterfalls or fountains, or in any place where water is sprayed, or forms a spray. This probably accounts for the beneficial effect of a holiday by the sea, or in the mountains with tumbling streams or waterfalls.

To increase the supply of negative ions indoors, some scientists recommend the use of ionisers; small portable machines that generate negative ions. They claim that ionisers not only clean and refresh the air but also improve the health of people sensitive to excess positive ions. Of course, there are the detractors, other scientists, who dismiss such claims and are skeptical about negative/positive in research. Therefore people can only make up their own minds by observing the effects on themselves, or on others, of a negative rich or poor environment. After all, it is debatable whether depending on seismic readings to anticipate earthquakes is more effective than watching the cat.

What effect does excessive positive ionization have on some people？

A．They think they are mad.

B．They feel very tired.

C．They become violently sick.

D．They are too tired to do anything.

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第10题

Recent research had claimed that an excess of positive ions （离子) in the air can have an

Recent research had claimed that an excess of positive ions (离子) in the air can have an ill-effect on people's physical or psychological health. What are positive ions？ Well, the air is full of ions, electrically charged particles, and generally there is a rough balance between the positive and the negative charges. But sometimes this balance becomes disturbed and a larger proportion of positive ions are found. This happens naturally before thunderstorms, earthquakes or when winds are blowing in certain countries. Or it can be caused by a build-up of static electricity indoors from carpets or clothing made of man-made fibers, or from TV sets, duplicators or computer display screens.

When a large number of positive ions are present in the air many people experience unpleasant effects such as headaches, fatigue, irritability, and some particularly sensitive people suffer nausea (恶心) or even mental disturbance. Animals are also found to be affected, particularly before earthquakes; snakes have been observed to come out of hibernation(冬眠), rats to flee from their burrows, dogs howl and cats jump about unaccountably. This has led the US Geographical Survey to fund a network of volunteers to watch animals in all effort to foresee such disasters before they hit vulnerable areas such as California.

To increase the supply of negative ions indoors, some scientists recommend the use of ionizers : small portable machines which generate negative ions. They claim that ionizers not only clean and refresh the air but also improve the health of people sensitive to excess positive ions. Of course, there are the detractors, other scientists, who dismiss such claims and are skeptical about negative/positive ion research. Therefore people can only make up their own minds by observing the effects on themselves, or on others, of a negative rich or poor environment.

After all, it is debatable whether depending on seismic readings to anticipate earthquakes is more effective than watching the cat.

According to the passage, static electricity can be caused by

A．using home-made electrical goods.

B．wearing clothes made of natural materials.

C．walking on artificial floor coverings.

D．copying TV programs on a computer.

点击查看答案