_________ are e-mail discussion groups that are organized around a specific topic. Messages are distributed to all members of the group.
a. Academic chatrooms
b. Metacrawlers
c. Listservs
d. Electronic meeting rooms
A type II error
A) is falsely accepting a null hypothesis. B) is falsely rejecting a null hypothesis.
C) is the same as a type I error D) None of the above
A school district decided to try a new computerized testing system. Two schools were selected for the trial based on the students being similar at the beginning of the school year.
Students at one school were given the paper-and-pencil version of the test while the students at another school received the computerized test version. The results indicated that the students performed better on the computerized version. However, someone pointed out that on the day of the test there was a fire drill at the school using the paper-and-pencil test. This fire drill confound would be described as
a. a selection-history bias interaction.
b. a selection bias.
c. a testing effect.
d. an instrumentation effect.
E-mail can be used in the research process by
a. using it to get on-line references from the Internet.
b. allowing you to communicate with other scientists and authors.
c. allowing you to send phone messages.
d. none of the above.
The level of statistical significance
A) is not related to random error.
B) should be 5 or smaller by rule of thumb.
C) is irrelevant to inferential statistics.
D) is the same as standard deviation.
Quick Reply
