five

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School

University of Phoenix *

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444

Subject

Statistics

Date

Feb 20, 2024

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pdf

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Uploaded by LieutenantHyena3142

Which of the following is the most likely value for "r" in a study examining the correlation in adult males between age in years and amount of hair on the head? * r=-0.44 Ms. Costas owns a business with nine other employees. Ms. Costas' annual salary is $90,000. Her manager's salary is $60,000. Of her other employees, three earn $25,000 each and five earn $15,000 each.The frequency polygon for this distribution resembles a * Positively skewed line graph Which of the following sets of scores has the greatest standard deviation? * 2, 7, 9, 22 For a language test with normally distributed scores, the mean was 70 and the standard deviation was 10. Approximately what percentage of test takers scored 60 and above? * 84 Which of the following correlation coefficients represents the strongest relationship between two variables? * -0.98 Jose hypothesizes that a new drug he has just invented will enhance mice's memories. He feeds the drug to the experimental group and gives the control group a placebo. He then times the mice as they learn to run through a maze. In order to know whether his hypothesis has been supported, Jose would need to use * Inferential statistics Which is typical of a positively skewed distribution? * The mean is higher than the median Marcy is trying to define anxiety in a way that can be empirically tested. She is attempting to find an appropriate _______________. * . Operational definition Tamar scored 145 on an IQ test with a mean of 100 and a standard deviation of 15. What is her z score? * +3

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