An act of changing physical location or position or of having this changed.
Answer:
85.8 m/s
Explanation:
speed=wavelength multiply by frequency
The research error described above is an example of selection bias.
Selection bias takes place when, from a population of interest, a group of individuals is selected in order to construct a sample but without a proper randomization. The result is a sample which is not representative of the underlying population.
According to the example, the target population of the research comprises all students but the sample only includes boys. Hence, selection has not been random because it followed a gender criteria, and the results obtained using it cannot be applicable to the whole population because they are affected by a selection bias.
This situation illustrates emotional contagion.
This means that among infants, emotions are contagious - so if one child starts crying, it will 'contaminate' other infants with its feelings, and then all of them will start crying in chorus, sharing the same feelings even though they might not feel sad or the need to cry at all.
