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1. A researcher conducted an experiment to determine the effect of the lecturer’

1. A researcher conducted an experiment to determine the effect of the lecturer’s age on student preferences to hear her lecture. In a regular classroom situation, 30 students wer…

1. A researcher conducts a hypothesis test on a population proportion. Her null

1. A researcher conducts a hypothesis test on a population proportion. Her null and alternative hypothesis are H0 : p = 0.4 and Ha : p < 0.4 . The test statistic and p-value fo…

1. A researcher conducts a hypothesis test using a sample from an unknown popula

1. A researcher conducts a hypothesis test using a sample from an unknown population. If the t statistic has df = 35, how many individuals were in the sample? A. n = 35 B. It cann…

1. A researcher conducts a study to determine if moderate exercise (weekly speed

1. A researcher conducts a study to determine if moderate exercise (weekly speed walking) is effective for treating depression. The researcher recruited ten volunteers with clinic…

1. A researcher conducts a study to determine if moderate exercise (weekly speed

1. A researcher conducts a study to determine if moderate exercise (weekly speed walking) is effective for treating depression. The researcher recruited ten volunteers with clinic…

1. A researcher conducts a survey of registered voters and divides the populatio

1. A researcher conducts a survey of registered voters and divides the population by township before obtaining a sample. This sampling technique is called: Select one: a. Convenie…

1. A researcher conducts a within-subjects design and notes that scores increase

1. A researcher conducts a within-subjects design and notes that scores increased at each level of the factor for all participants. Based on this description, does this test have …

1. A researcher conducts a within-subjects design and notes that scores increase

1. A researcher conducts a within-subjects design and notes that scores increased at each level of the factor for all participants. Based on this description, does this test have …

1. A researcher conducts a within-subjects design and notes that scores increase

1. A researcher conducts a within-subjects design and notes that scores increased at each level of the factor for all participants. Based on this description, does this test have …

1. A researcher conducts a within-subjects design and notes that scores increase

1. A researcher conducts a within-subjects design and notes that scores increased at each level of the factor for all participants. Based on this description, does this test have …

1. A researcher conducts an experiment comparing four treatment conditions with

1. A researcher conducts an experiment comparing four treatment conditions with 20 scores in each treatment condition (so the dataset includes a total of 80 scores). a. If the exp…

1. A researcher conducts an experiment comparing four treatment conditions with

1. A researcher conducts an experiment comparing four treatment conditions with 20 scores in each treatment condition (so the dataset includes a total of 80 scores). a. If the exp…

1. A researcher for the American Booksellers Association wants to know if retail

1. A researcher for the American Booksellers Association wants to know if retail sales per square foot is related to serving coffee or snacks on the premises. She examines a datab…

1. A researcher for the American Booksellers Association wants to know if retail

1. A researcher for the American Booksellers Association wants to know if retail sales per square foot is related to serving coffee or snacks on the premises. She examines a datab…

1. A researcher found that the relationship between the appraised value of a hou

1. A researcher found that the relationship between the appraised value of a house (in thousands of dollars) and its age (in years) could be summarized by the regression equation:…

1. A researcher groups college students in a study based on their year in colleg

1. A researcher groups college students in a study based on their year in college (freshman, sophomore, junior, senior) and the type of college they attend (junior, technical, uni…

1. A researcher has a total of 30 employees who were selected from six different

1. A researcher has a total of 30 employees who were selected from six different departments. There were five employees from each department.   The employees were tested and score…

1. A researcher has a total of 30 employees who were selected from six different

1. A researcher has a total of 30 employees who were selected from six different departments. There were five employees from each department. The employees were tested and scored …

1. A researcher has asked you to re-evaluate this data below. Only, this time th

1. A researcher has asked you to re-evaluate this data below. Only, this time the researcher has asked you to estimate an OLS model regressing the effect of both the effect of tea…

1. A researcher investigating the impact of television advertising on consumer a

1. A researcher investigating the impact of television advertising on consumer attitudes toward Brand X, compared with attitudes of a sample of respondents who did not watch the A…

1. A researcher is exploring a tropical rainforest that is destined to be clear

1. A researcher is exploring a tropical rainforest that is destined to be clear cut and turned into a palm oil plantation, six months in the future. She encounters many species th…

1. A researcher is exploring a tropical rainforest that is destined to be clear

1. A researcher is exploring a tropical rainforest that is destined to be clear cut and turned into a palm oil plantation, six months in the future. She encounters many species th…

1. A researcher is interested in identifying how the relationship between the bl

1. A researcher is interested in identifying how the relationship between the blood pressure levels of newborns and infants relate to subsequent adult blood pressure. The research…

1. A researcher is interested in the effect of prenatal alcohol exposure on birt

1. A researcher is interested in the effect of prenatal alcohol exposure on birth weight in rats. She hypothesizes that alcohol will have some sort of effect, either increasing or…

1. A researcher is interested in whether a new medication will reduce anxiety fo

1. A researcher is interested in whether a new medication will reduce anxiety for those who are diagnosed with generalized anxiety disorder. He is concerned with placebo effect. H…

1. A researcher is interested inwhether students who attend private high schools

1.      A researcher is interested inwhether students who attend private high schools have higheraverage SAT Scores than students in the general population. Arandom sample of 90 s…

1. A researcher is performing a two-way ANOVA using two factors. The first facto

1. A researcher is performing a two-way ANOVA using two factors. The first factor has 4 levels and the second factor has 5 levels. In the ANOVA Summary Table, the degrees of freed…

1. A researcher is performing experiments on the synthesis of a membrane-bound p

1. A researcher is performing experiments on the synthesis of a membrane-bound protein (like a receptor protein). Where in the cell should he/she investigate? The nucleus The lyso…

1. A researcher is testing the effect of a new cold and flu medication on mental

1. A researcher is testing the effect of a new cold and flu medication on mental alertness. A sample of n = 9 college students is obtained and each student is given the normal dos…

1. A researcher is testing the effect of a new cold and flu medication on mental

1. A researcher is testing the effect of a new cold and flu medication on mental alertness. A sample of n = 9 college students is obtained and each student is given the normal dos…

1. A researcher is testing the hypothesis that consuming a sports drink during e

1. A researcher is testing the hypothesis that consuming a sports drink during exercise will improve endurance. A sample of n = 50 male college students is obtained and each stude…

1. A researcher is trying to determine how his compound derived from eucalyptus

1. A researcher is trying to determine how his compound derived from eucalyptus affects gene expression in breast cancer cells. He performs a microarray to compare the expression …

1. A researcher looks at the effect of two different types of toothpaste on the

1. A researcher looks at the effect of two different types of toothpaste on the number of cavities a patient has. The researcher gives one group a natural toothpaste with no fluor…

1. A researcher measures deviant behavior in a sample of 12 children from abusiv

1. A researcher measures deviant behavior in a sample of 12 children from abusive homes (Sample A). Another researcher measures the same behavior in a sample of 18 children from a…

1. A researcher measures the relationship between Internet use (hours per week)

1. A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in a sample of 10 students. The following table lists the h…

1. A researcher measures the relationship between Internet use (hours per week)

1. A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in a sample of 10 students. The following table lists the h…

1. A researcher ran a series of analyses looking at the associations among the b

1. A researcher ran a series of analyses looking at the associations among the burglary rate, robbery rate and assault rate in her home state. She wanted to see if there were any …

1. A researcher reports in a mainstream educational research journal that the st

1. A researcher reports in a mainstream educational research journal that the statistic she calculated had a p >.05. What does this statement mean? a. The probability of this o…

1. A researcher reports in a mainstream educational research journal that the st

1. A researcher reports in a mainstream educational research journal that the statistic she calculated had a p >.05. What does this statement mean? a. The probability of this o…

1. A researcher reports that stress levels among nurses are higher compared to s

1. A researcher reports that stress levels among nurses are higher compared to stress levels in the general population, t(20) = 2.086, p = .05 (d = .12). Was this a one-tailed or …

1. A researcher reports that the effectiveness of a new marketing campaign signi

1. A researcher reports that the effectiveness of a new marketing campaign significantly increased sales compared with the previous campaign strategy, t(49) = 2.562, p < .05. U…

1. A researcher selects a sample of 16 women and asks them to rate how important

1. A researcher selects a sample of 16 women and asks them to rate how important a sense of humor is in someone they want a long-term relationship with. She records scores averagi…

1. A researcher selects a sample of 24 college students and has them rate their

1. A researcher selects a sample of 24 college students and has them rate their liking for two advertisements aimed at improving the image of the college. The researcher finds tha…

1. A researcher studied 32 giant pandas at a reserve. She recorded their daily b

1. A researcher studied 32 giant pandas at a reserve. She recorded their daily bamboo intake (in kg), their height (in cm), and their sex (coded as female=0, male=1). She input he…

1. A researcher studying the nutritional value of a new candy places a 5.90-gram

1. A researcher studying the nutritional value of a new candy places a 5.90-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed tempe…

1. A researcher wanted to investigate the effects of a high glucose diet on the

1. A researcher wanted to investigate the effects of a high glucose diet on the weight of Syrian hamsters (Mesocricetus auratus). He randomly selected 100 adult hamsters to receiv…

1. A researcher wanted to investigate the effects of a high glucose diet on the

1. A researcher wanted to investigate the effects of a high glucose diet on the weight of Syrian hamsters (Mesocricetus auratus). He randomly selected 100 adult hamsters to receiv…

1. A researcher wanted to investigate the effects of a high glucose diet on the

1. A researcher wanted to investigate the effects of a high glucose diet on the weight of Syrian hamsters (Mesocricetus auratus). He randomly selected 100 adult hamsters to receiv…

1. A researcher wanted to see if there was a relationship between education-atta

1. A researcher wanted to see if there was a relationship between education-attainment level and whether someone smokes or does not smoke. She classified education attainment into…

1. A researcher wants to create a random sample of students at Smart U. A friend

1. A researcher wants to create a random sample of students at Smart U. A friend suggests that the researcher walk across campus and approach every third person she encounters. Is…