In psychological theory, there are 6 types of basic instincts in a human being, and personality is determined by the presence or absence (2 choices) of these 6 basic instincts.
How many different types of personalities can be identified?
15
O 64
O 36
O 30

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?