The quintessential Acheulean tool is the:
a. Hand axe.
b. Spear thrower.
c. Pebble tool.
d. Bow and arrow.
A
Psychology
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The sign of a z-score indicates _____, and the absolute value indicates _____
a. direction from the mean; distance from the mean b. distance from the mean; direction from the mean c. proportion; percent d. percent; proportion
Psychology
If one score is randomly selected from a normal distribution with ยต = 100 and ? = 20, the probability of obtaining a score less than X = 130 is p = 0.9987
Indicate whether the statement is true or false
Psychology