During "sweeps week" last year, the viewing audience was distributed as follows: 36% NBC, 22% ABC, 24% CBS, and 18% FOX. This year during "sweeps week" a sample of 50 homes yielded the following data. Use Excel to test at .05 to determine if the audience proportions have changed.
Definitions:
Tracking Error
A measure of the deviation from the performance of a benchmark by an investment portfolio.
Optimized Portfolio
A portfolio of investments that has been designed to achieve the best possible balance of risk and return, based on specific investor goals and constraints.
Posterior Distribution
Revised probability distribution for a variable after adjustment for empirical evidence on its likely value.
Prior Distribution
Probability distribution for a variable before adjusting for empirical evidence on its likely value.
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