Alpha fetoprotein
A) is present in the blood of neonatal rats.
B) does not readily penetrate the blood-brain barrier.
C) deactivates circulating estradiol.
D) all of the above
E) none of the above
Answer: D
Psychology
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A sample of n = 4 scores is selected from a population with an unknown mean. The sample has a mean of M = 40 and a variance of s2= 16 . Which of the following is the correct 90% confidence interval for ??
a. ? = 40 ± 2.353(4) c. ? = 40 ± 2.353(2) b. ? = 40 ± 1.638(4) d. ? = 40 ± 1.638(2)
Psychology