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Question: Pain empathy and brain activity. Empathy refers to being able to understand and vicariously feel what others actually feel. Neuroscientists at University College London investigated the relationship between brain activity and pain-related empathy in persons who watch others in pain (Science, February 20, 2004). Sixteen couples participated in the experiment. The female partner watched while painful stimulation was applied to the finger of her male partner. Two variables were measured for each female: y = pain-related brain activity (measured on a scale ranging from -2 to 2) and x = score on the Empathic Concern Scale (0-25 points). The data are listed in the next table (p. 115). The research question of interest was: ‘‘Do people scoring higher in empathy show higher pain-related brain activity?'' Use simple linear regression analysis to answer the research question.
Explain why the significance of this study is suspect and propose an alternative study that would help clarify the importance of an alarm system.
in womens biathlon sprint the participants ski 7.5 km. after 2.5 km they shoot 5 shots on a target while lying down and
What is the relationship between confidence intervals and hypothesis testing? How are they the same? How are they different?
Check the assumptions and conditions for inference on proportions. Find a 95% confidence interval for the true proportion of companies that provide health insurance benefits to all their employees.
during one of the first beer wars in the early 1980s a taste test between schlitz and budweiser was the focus of a
a quiz consists of 20 multiple-choice questions each with 5 possible answers. for someone who makes random guesses for
Describe a situation when you have thought about the value of a measurement and stated a conclusion about the likliehood that it is true. In addition, discuss the challenges surround numeric testing, and discuss how understanding Type I and Type..
How to calculate expected difference between the samples means, and how does larger variability affect the size of the standard error for the sample mean difference?
A popular soft drink is sold in 2-liter (2,000-milliliter) bottles. Because of variation in the filling process, bottles have a mean of 2,000 milliliters and a standard deviation of 20, normally distributed.
A random sample of 3,500 people was chosen, and 421 were found to be unemployed. Do you believe that the government projects reduced the unemployment rate?
Clouds were randomly seeded or not with silver nitrate. Rainfall amounts were recorded from the clouds. The purpose of the experiment was to determine if cloud seeding increases rainfall. The following data is obtained:
Such tv are randomly selected and checked to determine what is being watch. Would it be unusual to find that 954 of the 2500 tvs are tuned to eyewitness news?
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