Questions 2 – 7. A researcher is interested in whether children who play an instrument differ in their IQs from children who do not play an instrument.
3 . what is IV
4. What is the DV
5. What is the μ_{1}
_{6. What is the} μ2
7 . What is the alternate hypothesis
3. IV is the categorical variable , instrument playing status of the child (i.e. whether the children plays the instrument or not)
4. DV is the IQ
5. μ1 is the true mean IQ of children who plays instrument
6.μ2 is the true mean IQ of children who does not play instrument
7. The alternative hypothesis is H: μ1 is different from μ2 i.e. H:
Questions 2 – 7. A researcher is interested in whether children who play an instrument differ...
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A researcher was interested in whether there was differences in the effect on performance on a stats exam among students who attended 1. Office hours regularly, 2. Both office hours and review sessions. 3. Just review sessions, and 4. Neither office hours nor review sessions. The researcher randomly assigned students to one of the four groups. At the end of the first exam, the researcher gave students in all four groups a stats exam and obtained the following results: Office...