A confidence interval (and p-value) associated with a parameter (e.g., the mean, or a b in regression) assumes:
A. The residuals are normally distributed.
B. The sampling distribution of the parameter estimate is normal.
C. The data are normally distributed.
D. The data have heterogeneity of variance.
Answer: B
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Safira is missing an X chromosome. She most likely has ______.
a. Down syndrome b. Klinefelter syndrome c. Turner syndrome d. Fragile X
A fourth-grade teacher administers a mathematics placement test to his fourth graders, which includes several students who are members of cultural minorities. Results from the test will be used to make decisions about students' mathematics ability. Performance on the test relies quite heavily on both students' mathematics and reading abilities. Which of the following can be concluded regarding
the test? a. The test is more valid because it tests both reading and mathematics abilities. b. The test is less valid because it tests both reading and mathematics abilities. c. The test is more reliable because it tests both reading and mathematics abilities. d. The test is less reliable because it tests both reading and mathematics abilities.
Fluency includes prosody, which is
a. speed and expression. b. appropriate reading level. c. rate and accuracy. d. intonation, stress, and phrasing.
Brianna must give a presentation in her marketing class. She was given a case study of a fledgling company that has potential in expanding its presence in its current market through the introduction of a new product. In her presentation she will pitch her idea for the optimal marketing plan for this product, based on what the class has learned throughout the course. She will create a PowerPoint presentation with handouts for the class to reference as she discusses the details for each major point. Her presentation skills will be assessed as a part of her grade, in addition to the alignment of the content to major concepts learned in the course. To prepare for her presentation, which memory strategy should she use?
A. Method-of-place technique B. Summarize C. Note cards D. Practice, practice, practice