In an independent-measures hypothesis test, what must be true if t = 0?
A) ?The two population means must be equal.
B) ?The two sample means must be equal.
C) ?The two sample variances must be equal.
D) ?The two sample means are not equal.
B
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If a baby is born at 24weeks, what are its chances for survival?
a. b. About 20% c. Greater than 50% d. Almost 100% with current technology
Humans experience a "stream of consciousness" rather than discrete choppy impressions because
a. saccadic eye movements create perceptions at a rate of approximately 20 per second, making the images seem continuous. b. short-term memories overlap, which gives the impression of a single perception. c. sensory memory briefly holds perceptions, making them seem connected. d. perceptions in short-term memory are not stored, but rather are constantly replaced with new perceptions.
Paige is a conscientious student
Even on the weekend, she never stays up past 2 A.M. to socialize. She works weekends from 7 A.M. to 3 P.M. and does not nap. On Monday, she has four classes. On Monday night, she goes to bed early, and the rest of the week she gets 7 to 8 hours of sleep. Which of the following is most likely? a) There is no difference in her ability to learn on Monday compared to the rest of the week. b) Her learning ability is impaired on Monday by sleep deprivation. c) Her learning ability will peak on Monday after her refreshing weekend. d) Her learning ability is improved Monday by having some recreation on weekend nights.
Parten's research found most 1- to 2-year-olds spent their time in which types of play?
A) associative and cooperative B) solitary and parallel C) onlooker, parallel and associative D) unoccupied, onlooker, and solitary