Answer:
The correct answer is:
b. Self-confirming
Explanation:
According to Bronfenbrenner in his Ecological systems theory the quality of the context and the social environment are really important for the development of an individual since the first years of life. He explains how all of this context becomes even more complex through years of growing. One of the important premises to take into account during this developmental process is the self-confirming stage, in which the individual becomes more aware about his beliefs and feelings about the surrounding world, and in this way he can offer a more elaborated response about the facts in general, for example a higher self-esteem which helps so much in decision making and other social contexts.
Answer: Sensory memory
Explanation: Sensory memory is part of the total memory and refers to that part of memory that collects and stores sensory information that is collected through sensory receptors. After this collected short-term information is collected through sensory receptors and processed in the nervous system is stored in this sensory memory. This type of memory is, in fact, the shortest memory, since it lasts as long as the external stimulus lasted on our senses. Then, after this short-term external stimulus information, that is, sensory information, this information is transferred to short-term memory.
The correct answer is Visual
It is the first memory process, during which information is transformed so that it can be stored. This is a physiological process that begins with attention. A memorable event causes neurons to fire faster, organizing information into a systematic matrix that can be remembered later. The way we encode information determines how it will be stored and what suggestions will be effective when we try to retrieve it.
The correct answer is - This research would be eligible for exemption because the researcher is not interacting with the children and the playground is a public setting. This type of research does not need IRB (IRB being institutional review board also known as ethics committee) review because the researcher will not be interacting with the children in anyway, it is purely observational and the setting is a public place, in addition all children will remain anonymous in the study, therefore the researcher is not breaking any code of ethics.
Answer: t=-5.651
Explanation:
Let
be the population mean number of hours a week answering their email.
As per given we have

Sample size : n= 783
Sample mean : 
Sample standard deviation: s=7.23
Since population standard deviation is unknown, so our test -statistic has a t-distribution.
Test statistic : 

∴ The test statistic : t=-5.651