The Number of People Who Watched the CBS, NBC, and ABC

question 49

True/False

The number of people who watched the CBS, NBC, and ABC evening news shows in 2008 was about half that of 1980.

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Definitions:

Normal Distribution

A statistical distribution where the data forms a symmetrical bell-shaped curve, with the mean, median, and mode all equal and in the center.

Standard Normal

A special case of the normal distribution where the mean is 0 and the standard deviation is 1.

10th Percentile

The value below which 10% of observations in a data set fall.

Z Distribution

A normal distribution with a mean of zero and a standard deviation of one, also known as a standard normal distribution.