The blastocyst begins to attach itself to the uterine wall around the sixth day after conception
Indicate whether the statement is true or false
T
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Both the _____ test and the _____ test are used with ordinal data to compare more than two groups
a. Friedman; Kruskal-Wallis b. Friedman; Wilcoxon matched-pairs signed-ranks T c. Kruskal-Wallis; Wilcoxon rank-sum d. Wilcoxon rank-sum; Wilcoxon matched-pairs signed-ranks T
Approximately 30% of 14- and 15-year-old girls and boys report having had vaginal intercourse
Indicate whether this statement is true or false.
The number of adults over 65 in the workforce decreased significantly between 2004 and 2014
a. True b. False Indicate whether the statement is true or false
In an experiment, a researcher manipulates one variable to see how it affects a second variable. The manipulated variable is called the __________.
A. dependent variable B. experimental variable C. independent variable D. placebo