Answer:
According to social comparison theory, Barbara appears to have engaged in downward comparison.
Explanation:
According to Leon Festinger's Theory of Social Comparison, we commonly compare ourselves to people who are similar to us. We do that with the purpose of making accurate self-evaluations. However, a type of comparison known as downward comparison happens when we do not look at those who are similar to us. Instead, we compare ourselves to people who are in an inferior, more unfortunate position. That is a way we find to feel better about ourselves. This is what Barbara has done. She only knows the grades of two other classmates - one did better, one did worse than she did. Yet, she has chosen to think she has done really well relative to others in the class. Barbara has clearly chosen to ignore the one got an A, comparing herself to the one who got a C.
Answer:
1) A rectangle whose width measures 1 and length 4. 2) Objective function: in terms of P and w

Explanation:
1) Consider that the rectangle dimensions are made up of Integer numbers greater than 0, assuming w < l, and the product of w times l must be equal to 4. A rectangle whose width measures 1 and length 4
Then it comes:


Answer:
Operant conditioning is a learning behavior, influenced by consequences.
Explanation:
Answer:
Range = 19-11 = 13
Median = (12+15)/2 = 13.5
Mean = 14.3
IQR = 5
Variance = 8.45
Standard deviation = 2.907
Explanation:
12 17 19 15 12 18 11 15 12 12
Arranging in ascending order
11 12 12 12 12 15 15 17 18 19
Range = 19-11 = 13
Median = (12+15)/2 = 13.5


Interquartile range

Interquartile range is 5
Mean


Variance = 8.45

Standard deviation = 2.907