The Time X a Student Spends Learning a Computer Software

question 193

Short Answer

The time x a student spends learning a computer software package is normally distributed with a mean of 8 hours and a standard deviation of 1.5 hours. A student is selected at random.
What is the probability that the student spends less than 6 hours learning the software package?
______________
What is the probability that the student spends at least 8.5 hours learning the software package?
______________
What is the probability that the student spends between 6.5 and 8.5 hours learning the software package?
______________

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Definitions:

Experimental Group

In research, the group of subjects that receives the treatment or intervention under study, in contrast to the control group which does not.

Random Assignment

A method used in experiments to equally distribute participants across different groups to minimize biases and ensure that the groups are comparable.

Control Group

In experimental research, a group of subjects that does not receive the experimental treatment, used as a benchmark to measure how the other tested subjects perform.

Experimental Group

In experimental research, this is the group of subjects who receive the treatment or intervention being tested.