Ana’s father gives her one toy. The next day, he gives her another toy. The next day, he takes back the first toy, as he realized it is not safe for her as an infant. She now looks at her shelf and sees only one toy. She is sad because she realizes a toy is missing. This relies on which core knowledge system?
a. precisely small numbers
b. object
c. magnitude
d. space
Ans: a
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What will be an ideal response?
A researcher conducts a hypothesis test using a sample of n = 20 from an unknown population. What is the df value for the t statistic?
a. 19 b. 20 c. 21 d. Cannot be determined from the information given
What is meant by "Generation Ex"?
What will be an ideal response?