In sleep labs, changes in tiny electrical signals generated by the brain are usually amplified and recorded with
a. electroencephalography.
b. magnetic resonance imaging.
c. positron emission tomography.
d. computed tomographic scanning.
ANSWER: a
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Maryownsherownconsultingbusiness.Amongheremployeesare:Sue-thereceptionistand a singlemotherof three Joe-the web designerandmarketingmanager,single, has anMBA Alan-amarriedsalesman who makes few sales and cares for anelderlyparentCarla-anunmarriedsalespersonwho makes themajorityofthecompany'ssales. Assume that Mary agrees with egalitarian theories. Which of the following would you expect?
A. Carla would be the highest-paid employee because of the business she brings in. B. Alan and Sue would be paid more than their work seems to deserve, due to their family needs. C. Mary would divide the company's profits equally among all employees. D. Mary would expect the government to tell her how to pay the employees.
Data obtained from rating scales often are treated statistically as representing ______ measurement
a. interval b. nominal c. ratio d. average
Whether a fetus will be born with Down syndrome is related to
a. the age of the mother at the time of pregnancy. b. the presence of specific amino acids in the mother's diet. c. overexposure to toxins during pregnancy. d. ingestion of drugs and alcohol by the father prior to conception. e. the uterine environment during pregnancy.
What does the width of a confidence interval tell us, and how does the size of a sample affect the width of a confidence interval for a population mean?
What will be an ideal response?