If the likelihood of a child enrolling in college correlates to their parents' income, then what would the parents' income be considered? Dependent variable Independent variable Hypothesis Sample
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(Choose one answer!) A researcher who studies families has a focal hypothesis that high schoolers who eat more dinners with family members perform better on standardized tests. The researcher measures family dinners as the number of dinners high schoolers eat with their family members per month. The researcher measures test performance by having high schoolers take a standardized test with possible scores ranging from 0 - 100. The researcher runs a regression equation and the result produces the following equation: Y^hat = 50 + 3X For this same study of family dinners and test performance among high schoolers, now suppose that the researcher controlled for the family's annual income (in thousands) when the children were aged 12 (before high school). The researcher produces the following equation. (Family income is represented with Z.) Y^hat = 38 + .02X + 2Z The researcher is controlling for family income because she thinks: a) family income is a possible mediating (intervening) variable b) family income is a possible source of spuriousness c) family income is the new dependent variable
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You want to figure out what kid of boy attracts high school girls. High school girls were randomly assigned to hear about either a guy with trendy clothes, a nice car or a confident attitude, then they rated him on a scale from one to ten. a. What is/are the independent variable (s)? b. What is the dependent variable? c. In this case, what is the null hypothesis? d. In this case, what could be the alternative hypothesis? e. What statistical test would you use to test out this topic?
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