The Number of Hours Per Week That High School Students $\overline{ y}$

question 30

Multiple Choice

The number of hours per week that high school students spend on computers is normally distributed,with a mean of 5 hours and a standard deviation of 2 hours.70 students are chosen at random.Let $\overline{ y}$ represent the mean number of hours spent on the computer for this group.Find the probability that $\overline{ y}$ is between 5.1 and 5.7.

• A)0.672
• B)0.660
• C)0.115
• D)0.336
• E)2.510

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Definitions:

Diffusion Of Responsibility

A sociopsychological phenomenon where individuals in a group are less likely to take action or feel a sense of responsibility in the presence of others.

Ingroup Bias

The tendency to favor and extend loyalty to one's own group over others, often leading to prejudice and discrimination.

Epileptic Seizure

A sudden surge of electrical activity in the brain causing changes in behavior, movements, feelings, or levels of consciousness, associated with epilepsy.

Bystander Effect

The tendency in social psychology for individuals to be less willing to provide aid to someone in distress if other people are also present.