Robin Purchased Shares of a Machine Tool Company and Shares

question 78

Multiple Choice

Robin purchased shares of a machine tool company and shares of an airline company. Let E be the event that the shares of the machine tool company increase in value over the next 5 months, and let F be the event that the shares of the airline company increase in value over the next 5 months. Using the symbols ∪, ∩ and ^c describe the event that the shares of only one of the two companies increase in value.

• A) (E ∩ F^c) ∪ (E^c ∩ F)
• B) E ∪ F
• C) E^c ∩ F^c
• D) Ø

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Definitions:

Standard Error

A statistical measure of the variability or precision of a sample mean, as an estimate of the population mean.

Population Average

The mean value of a set of characteristics or measurements for the entire population.

Population Standard Deviation

A measure of the dispersion or spread of a set of data points in a population, showing how much variation exists from the average.

Square Root

A mathematical function that produces the original number when multiplied by itself.