Question
The table shows the performance of a selection of 100 stocks after one year. (Take S to be the set of all stocks represented in
The table shows the performance of a selection of 100 stocks after one year. (Take S to be the set of all stocks represented in the table. If a stock stayed within 20% of its original value, it is classified as "unchanged".)
| Companies | Total | |||
|---|---|---|---|---|
| Pharmaceutical P | Electronic E | Internet I | ||
| Increased V | 20 | 18 | 9 | 47 |
| Unchanged N | 8 | 16 | 4 | 28 |
| Decreased D | 18 | 15 | 8 | 41 |
| Total | 46 | 49 | 21 | 116 |
Use symbols to describe the event that an Internet stock did not increase.
how many elements are in this event
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Prealgebra
Authors: Elayn Martin Gay
7th edition
321955048, 978-0321955043
