All Matches
Solution Library
Expert Answer
Textbooks
Search Textbook questions, tutors and Books
Oops, something went wrong!
Change your search query and then try again
Toggle navigation
FREE Trial
S
Books
FREE
Tutors
Study Help
Expert Questions
Accounting
General Management
Mathematics
Finance
Organizational Behaviour
Law
Physics
Operating System
Management Leadership
Sociology
Programming
Marketing
Database
Computer Network
Economics
Textbooks Solutions
Accounting
Managerial Accounting
Management Leadership
Cost Accounting
Statistics
Business Law
Corporate Finance
Finance
Economics
Auditing
Ask a Question
Search
Search
Sign In
Register
study help
mathematics
statistics
Questions and Answers of
Statistics
To investigate the phenomenon of "home-team advantage," a researcher recorded the outcomes from 64 college football games on one Saturday in October. Of the 64 games, 42 were won by home teams. Does
Research has demonstrated that people tend to be attracted to others who are similar to themselves. One study demonstrated that individuals are disproportionately more likely to marry those with
Suppose that the researcher from the previous problem repeated the study of married couples' initials using twice as many participants and obtaining observed frequencies that exactly double the
A professor in the psychology department would like to determine whether there has been a significant change in grading practices over the years. It is known that the overall grade distribution for
Automobile insurance is much more expensive for teenage drivers than for older drivers. To justify this cost difference, insurance companies claim that the younger drivers are much more likely to be
To investigate the phenomenon of "home team advantage," a researcher recorded the outcomes from 64 college football games on one Saturday in October. Of the 64 games, 42 were won by home teams. Does
In 2005, Fung et al. published a study reporting that patients prefer technical quality versus interpersonal skills when selecting a primary care physician. Participants were presented with report
Danner and Phillips (2008) report the results from a county-wide study showing that delaying high school start times by one hour significantly reduced the motor vehicle crash rate for teen drivers in
For each of the following, assume that a two-tailed test using the normal approximation to the binomial distribution with α = .05 is being used to evaluate the significance of the result.a. For a
On a multiple-choice exam with 100 questions and 4 possible answers for each question, you get a score of X = 32. Is your score significantly better than would be expected by chance (by simply
For each of the following, assume that a two-tailed test using the normal approximation to the binomial distribution with α = .05 is being used to evaluate the significance of the result.a. For a
Reed, Vernon, and Johnson (2004) examined the relationship between brain nerve conduction velocity and intelligence in normal adults. Brain nerve conduction velocity was measured three separate ways
In the Preview section for Chapter 11, we presented a study showing that swearing can help relieve pain (Stephens, Atkins, & Kingston, 2009). In the study, participants placed one hand in
Thirty percent of the students in the local elementary school are classified as only children (no siblings). However, in the special program for talented and gifted children, 43 out of 90 students
Stressful or traumatic experiences can often worsen other health-related problems such as asthma or rheumatoid arthritis. However, if patients are instructed to write about their stressful
Langewitz, Izakovic, and Wyler (2005) reported that self-hypnosis can significantly reduce hay-fever symptoms. Patients with moderate to severe allergic reactions were trained to focus their minds on
Insurance companies charge young drivers more for automobile insurance because they tend to have more accidents than older drivers. To make this point, an insurance representative first determines
Group-housed laying hens appear to prefer having more floor space than height in their cages. Albentosa and Cooper (2005) tested hens in groups of 10. The birds in each group were given free choice
In Problem 21 in Chapter 11, we described a study showing that students are likely to improve their test scores if they go back and change answers after reconsidering some of the questions on the
The habituation technique is one method that is used to examine memory for infants. The procedure involves presenting a stimulus to an infant (usually projected on the ceiling above the crib) for a
Most children and adults are able to learn the meaning of new words by listening to sentences in which the words appear. Shulman and Guberman (2007) tested the ability of children to learn word
A researcher is testing the effectiveness of a skills mastery imagery program for soccer players. A sample of n = 25 college varsity players is selected and each player is tested on a ball-handling
Last year the college counseling center offered a workshop for students who claimed to suffer from extreme exam anxiety. Of the 45 students who attended the workshop, 31 had higher grade-point
Trying to fight a drug-resistant bacteria, a researcher tries an experimental drug on infected subjects. Out of 70 monkeys, 42 showed improvement, 22 got worse, and 6 showed no change. Is this
Biofeedback training is often used to help people who suffer migraine headaches. A recent study found that 29 out of 50 participants reported a decrease in the frequency and severity of their
Güven, Elaimis, Binokay, and Tan (2003) studied the distribution of paw preferences in rats using a computerized food-reaching test. For a sample of n = 144 rats, they found 104 right-handed
During the 2004 Olympic Games, Hill and Barton (2005) monitored contests in four combat sports: Greco-Roman wrestling, freestyle wrestling, boxing, and tae kwon do. Half of the competitors were
Problem 6 in Chapter 17 cited a study showing that people tend to choose partners who are similar to themselves. Jones, Pelham, Carvallo, & Mirenberg, 650 CHAPTER 18 (2004) demonstrated that people
A researcher would like to determine whether people really can tell the difference between bottled water and tap water. Participants are asked to taste two unlabeled glasses of water, one bottled and
In 1985, only 8% of the students in the city school district were classified as being learning disabled. A school psychologist suspects that the proportion of learning-disabled children has changed
In the Preview section for Chapter 17, we discussed a study by Loftus and Palmer (1974) examining how different phrasing of questions can influence eyewitness testimony. In the study, students
A recent survey of practicing psychotherapists revealed that 25% of the individuals responding agreed with the statement, "Hypnosis can be used to recover accurate memories of past lives" (Yapko,
The following scores are related by the equation Y = X2. Note that this is not a linear relationship, but every time X increases, Y also increases.a. Compute the Pearson correlation between X and Y.
It is well known that similarity in attitudes, beliefs, and interests plays an important role in interpersonal attraction (see Byrne, 1971, for example). Thus, correlations for attitudes between
A researcher is investigating the physical characteristics that influence whether a person's face is judged as beautiful. The researcher selects a photograph of a woman and then creates two
Friedman and Rosenman (1974) have suggested that personality type is related to heart disease. Specifically, type A people, who are competitive, driven, pressured, and impatient, are more prone to
One of the original methods for testing ESP (extrasensory perception) used Zener cards, which were designed specifically for the testing process. Each card shows one of five symbols (square, circle,
Research suggests that the antioxidants in foods such as blueberries can reduce and even reverse age-related declines in cognitive functioning (Joseph et al., 1999). To test this phenomenon, a
A researcher is investigating the relationship between personality and birth order position. A sample of college students is classified into four birth-order categories (1st, 2nd, 3rd, 4th or later)
A researcher is investigating the relationship between personality and birth order position. A sample of college students is classified into four birth-order categories (1st, 2nd, 3rd, 4th or later)
A survey of female high school seniors includes one question asking for the amount of time spent on clothes, hair, and makeup each morning before school. The researcher plans to use the results as
Brunt, Rhee, and Zhong (2008) surveyed 557 undergraduate college students to examine their weight status, health behaviors, and diet. In a similar study, researchers used body mass index (BMI) to
A researcher would like to determine whether infants, age 2 to 3 months, show any evidence of color preference. The babies are positioned in front of a screen on which a set of four colored patches
A researcher administers a survey to graduating seniors, asking them to rate their optimism about the current job market on a 7-point scale. The researcher plans to use the results as part of a
Standardized measures seem to indicate that the average level of anxiety has increased gradually over the past 50 years (Twenge, 2000). In the 1950s, the average score on the Child Manifest Anxiety
Belsky, Weinraub, Owen, and Kelly (2001) reported on the effects of preschool childcare on the development of young children. One result suggests that children who spend more time away from their
McGee and Shevlin (2009) found that an individual's sense of humor had a significant effect on how attractive the individual was perceived to be by others. In a similar study, female college students
Numerous studies have found that males report higher self-esteem than females, especially for adolescents (Kling, Hyde, Showers, & Buswell, 1999). A recent study found that males scored an average of
Recent budget cuts forced the city school district to increase class size in the elementary schools. To determine student reaction to the change, the district administered a survey to students asking
Research has demonstrated that IQ scores have been increasing, generation by generation, for years (Flynn, 1999). A researcher would like to determine whether this trend can be described by a linear
A researcher is investigating the effectiveness of acupuncture treatment for chronic back pain. A sample of n = 20 participants is obtained from a pain clinic. Each individual rates the current level
Research results indicate that physically attractive people are also perceived as being more intelligent (Eagly, Ashmore, Makhijani, & Longo, 1991). As a demonstration of this phenomenon, a
Research has shown that people are more likely to show dishonest and self-interested behaviors in darkness than in a well-lit environment (Zhong, Bohns, & Gino, 2010). In a related experiment,
There is some evidence suggesting that you are likely to improve your test score if you rethink and change answers on a multiple-choice exam (Johnston, 1975). To examine this phenomenon, a teacher
A researcher is evaluating customer satisfaction with the service and coverage of three phone carriers. Each individual in a sample of n = 25 uses one carrier for 2 weeks, then switches to another
There is some research indicating that college students who use Facebook while studying tend to have lower grades than non-users (Kirschner & Karpinski, 2010). A representative study surveys students
To examine the effect of sleep deprivation on motorskills performance, a sample of n = 10 participants was tested on a motor-skills task after 24 hours of sleep deprivation, tested again after 36
Ryan and Hemmes (2005) examined how homework assignments are related to learning.The participants were college students enrolled in a class with weekly homework assignments and quizzes. For some
Ford and Torok (2008) found that motivational signs were effective in increasing physical activity on a college campus. In a similar study, researchers first counted the number of students and
Last fall, the college introduced a peer-mentor program in which a sample of n = 75 freshmen was each assigned an upperclassman mentor. To evaluate the success of the program, the administration
To examine the relationship between alcohol consumption and birth weight, a researcher selects a sample of n = 20 pregnant rats and mixes alcohol with their food for 2 weeks before the pups are born.
To examine the relationship between texting and driving skill, a researcher uses orange cones to set up a driving circuit in the high school parking lot. A group of students is then tested on the
Childhood participation in sports, cultural groups, and youth groups appears to be related to improved self-esteem for adolescents (McGee, Williams, Howden-Chapman, Martin, & Kawachi, 2006). In a
There is some evidence indicating that people with visible tattoos are viewed more negatively than people without visible tattoos (Resenhoeft, Villa, & Wiseman, 2008). In a similar study, a
A researcher investigated different combinations of temperature and humidity to examine how heat affects performance. The researcher compared three temperature conditions (70º, 80º, and 90º) with
Hallam, Price, and Katsarou (2002) investigated the influence of background noise on classroom performance for children aged 10 to 12. In a similar study, students in one classroom worked on an
Showing 82200 - 82300
of 82267
First
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823