If a researcher wanted to determine whether observed proportions differed significantly from expected proportions, the statistic would be a(n):
A) t-test
B) Correlation coefficient
C) ANOVA
D) Chi-square
D
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A 10-year-old child spends 2 hours alone every afternoon before the parents arrive home from work. Which safety measure should the nurse suggest the parents teach the child?
A) Preparing a no-cook snack after school B) Lighting candles in case there is a power failure C) Wearing the house key prominently around the neck D) Telling people at school about being home alone or added safety
A new parent group inquires about the stages through which their children will progress as they grow older. The nurse is discussing Piaget's developmental stages
In what order would the nurse expect the child to progress through Piaget's stages of development? 1. Sensorimotor 2. Formal operational 3. Preoperational 4. Concrete operational
Which of the following actions taken by the researcher would be most likely to decrease threats to validity in a study?
A) using independent data collectors B) using a convenience sample C) obtaining informed consent from subjects D) none of the above
Oxygen and carbon dioxide are exchanged:
a. During inspiration and expiration b. During inhalation and exhalation c. Between the alveoli and capillaries d. At the pharynx and larynx