Dr. Yodela wants to find out whether there is a significant difference in the mean scores of two groups on his new intelligence test. Which statistic should Dr. Yodela use?
a. ?The median
b. ?A correlation
c. ?An analysis of variance
d. ?A t test
ANSWER:
d
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According to the National Vaccine Advisory Committee, children should receive the full schedule of vaccinations ______.
A. within the appropriate timetable B. in the correct sequence C. until they reach adolescence D. after they experience their first illness
Before meiosis, the sperm cell:
a. contains 46 chromosomes. b. is significantly larger than the egg cell. c. contains two X chromosomes. d. is more likely to conceive a girl than a boy.
Which of the following statements about children from divorced families is FALSE?
A) Adults whose parents divorced are less likely to attend college than adults whose parents remained married. B) Adults whose parents divorced are more likely than adults raised in intact families to have children at an early age. C) Girls' behavior tends to be more affected by divorce than does boys' behavior. D) Long-term disruptions in sibling relationships occur more for adolescents whose parents divorce.
In __________, __________ is/are produced when meiosis is complete
A) males; one sperm B) females; four eggs C) males; four sperm D) females; 1 to 2 million eggs