H0 is to Ha as _____ hypothesis is to _____ hypothesis
a. null; alternative
b. alternative; null
c. one-tailed; two-tailed
d. two-tailed; one-tailed
a
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Which of the following students has the best explanation for illusory correlations?
a. Tim: "Illusory correlations arise when people focus their attention on only one set of characteristics, and they do not consider the other sets of characteristics" b. Joanne: "Illusory correlations are based on the inappropriate use of confidence intervals." c. Sophie: "Illusory correlations resemble the conjunction fallacy, in which we believe that two psychological characteristics or categories are related to each other." d. Ingo: "Actually, a recent meta-analysis showed thatâ€"ironicallyâ€"illusory correlations are illusory."
Increased levels of the protein leptin have been hypothesized to play a role in initiating puberty
Indicate whether the statement is true or false