The table shows the performance of a selection of 112 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...

Extracted text: The table shows the performance of a selection of 112 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 Pharmaceutical Electronic E Internet Total Increased 11 4 16 31 Unchanged 37 13 50 Decreased D 11 4 16 31 Total 59 8 45 112 n(D n I) Calculate n(D) What does the answer represent? n(D n I) is the fraction of decreasing stocks that were Internet stocks. n(D) n(D n I) is the fraction of decreasing stocks that were Electronic stocks. n(D) n(D n I) is the fraction of unchanged stocks that were Internet stocks. n(D) n(D n I) is the fraction of increasing stocks that were Electronic stocks. n(D) n(D n I) is the fraction of decreasing stocks that were Pharmaceutical stocks. n(D)