Whenever the alternative hypothesis is written as "mean 1 is greater than
mean 2", then
a. a one-tail t test is allowed
b. only a two-tail t test is allowed
c. an independent t test is not allowed
d. sample sizes must be greater than 30
a
Psychology
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It is the language (speech) that carries the concepts and cognitive structures to the child, and these concepts become the _____ that the child will use
A) psychological tools B) physical tools C) emotional tools D) social skills
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