Answer:
75%
Explanation:
In order to understand this question you need to understand the matching law first. The matching law provides the density of reinforcement or the rate of reinforcement if more than one response is available simultaneously to the individual. Here, two responses are available which are left key, 60 reinforcers per hour, and right key, 20 reinforcers per hour. This provides the ratio between the two reinforcers which is 60:20 or 3:1 in favor of left key. Here, one has to make a prediction only for left key and based on 3:1 ratio it can be said that 75% of pigeon will make their responses on the left key.
13 - 5 = 8 (eight classical music discs were bought.)
I believe the answer should be B
Answer:
The Drawbacks of Federalism. Federalism also comes with drawbacks. Chief among them are economic disparities across states, race-to-the-bottom dynamics (i.e., states compete to attract business by lowering taxes and regulations), and the difficulty of taking action on issues of national importance.
Answer:
C. the study of the development of language over time, including its changes and variations
Explanation: