Suppose That the Amount of Time Teenagers Spend on the Internet

question 107

Essay

Suppose that the amount of time teenagers spend on the Internet is normally distributed, with a standard deviation of 1.5 hours. A sample of 100 teenagers is selected at random, and the sample mean is computed as 6.5 hours.
Determine the 95% confidence interval estimate of the population mean. Interpret

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Definitions:

Tear

A drop of clear salty liquid secreted by glands in your eyes, often resulting from emotion or irritation.

Perfectly Horizontal

A line on a graph that shows a constant value, indicating no change in the variable it represents across different situations.

Perfectly Vertical

A line on a graph that shows an infinite response in the variable measured on the y-axis for any change in the variable on the x-axis, indicating no change regardless of input.

Percentage Change

A mathematical calculation that indicates the degree of change over time as a proportion of the starting value, often expressed as a percentage.