What is the probability exactly
In a certain town, 70 % people support the construction of a new ballpark. If 5 people are randomly selected, what is the probability exactly 2 of them supported it?
a) .490
b).132
c).230
d).168
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In the instructor's answer book for a mathematics text, 8% of the answers are incorrect. Use the Poisson approximation to express the probability that there are exactly 2 incorrect answers for a homework set with 50 problems.
The iron block eventually reaches thermal equilibrium with the lake water. Assuming an average specific heat of 0.45 kJ/(kg-K) for the iron, determine the entropy change of the iron block?
The activation energy for a reaction is changed from 241 kJ/molto 55.5 kJ/molat 641 K by the introduction ofa catalyst. If the uncatalyzed reaction takesabout 2890 years to occur, about how long will the catalyzed reaction take?
A major-league pitcher can throw a baseball in excess of 40.8 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches the catcher who is 17.4 m away from the point of release?
What is the heat transfer rate through conduction in Watts. The walls are 9 ft hight and the room has the dimension of 16 ft by 19 feet and the walls.
The following summary table presents the results from a repeated-measures ANOVA comparing three treatment conditions, each with a sample of n = 12 participants. Fill in the missing values in the table. (Hint: start with the df values)
If the surface of the tower is normally kept at 23 Celcius at night and has a emissivity of 0.64, what is the amount of heat loss due to radiation?
The rocket attains its launch speed in a negligibly short period of time, after which its engines shut down and the rocket coasts. By how much does the rocket clear the top of the wall?
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Approaching a new social situation is similar to solving a cognitive problem. Children approaching a group of peers need to understand the others' communication
Children's goals in social interactions Children's goals affect their strategies in social situations, and this, too, is related to their peer status
The step-by-step social information processing approach may be a better model for encounters in new situations than in familiar situations
As in other areas of development, temperament interacts with experience to pre dict peer status.
A small number of children and adolescents who are perceived to be popular, however, display a mix of positive and negative behaviors
Question: Identify and distinguish between positive and negative reinforcement contingencies.