“According to the National Center for Health Statistics, in 2005 the average birthweight of a newborn baby was approximately normally distributed with a mean of 119 ounces (7 lb, 7 oz) and a standard deviation of 19 ounces.” What percentage of babies weigh between 112 and 144 ounces (7 and 9 lb) at birth?
a. 9.34%
b. 14.43%
c. 44.91%
d. 55.09%
d. 55.09%
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People's names, where we keep things, and humorous incidents from our childhood are all examples of information held in our ____ store
a. short-term b. long-term c. working d. stable
Elementary school teachers are often reluctant to teach science because they lack personal ________________ in science
Fill in the blank(s) with the appropriate word(s).
The following diagram describes a:
a. counterbalanced design. b. three-group, posttest-only design. c. pretest-posttest, control group design. d. repeated measures design.
When Maggie wanted to find out how children were punished at home, she conducted separate interviews of individual children and their parents. An advantage of this research design is that
A. Maggie needed to interview only a few people to get a valid research sample. B. Maggie needed to interview each set of parents and children only once. C. Maggie could assess whether parents and children gave conflicting reports. D. it revealed causal relationships.