Question # 3. The following table classifies a stock's price change as up, down, or no change for both today's and yesterday's prices. Price changes were examined for 100 days. A financial theory states that stock process follow what is called a "random walk". This means, in part, that the price change today for a stock must be independent of yesterday's price change. Test the hypothesis that daily stock price changes for this stock are independent. Let a = 0.05 Price Change Today Up No Change Down Up 14 6 16 Price Change Previous Day No Change Down 16 12 8 14 6 8

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Question # 3.
The following table classifies a stock's price change as up, down, or no change for both today's and yesterday's prices.
Price changes were examined for 100 days. A financial theory states that stock process follow what is called a "random
walk". This means, in part, that the price change today for a stock must be independent of yesterday's price change. Test
the hypothesis that daily stock price changes for this stock are independent. Let α = 0.05
Price Change Today
Up
No Change
Down
Up
14
6
16
Price Change Previous Day
No Change
Down
16
12
8
6
14
8
Transcribed Image Text:Question # 3. The following table classifies a stock's price change as up, down, or no change for both today's and yesterday's prices. Price changes were examined for 100 days. A financial theory states that stock process follow what is called a "random walk". This means, in part, that the price change today for a stock must be independent of yesterday's price change. Test the hypothesis that daily stock price changes for this stock are independent. Let α = 0.05 Price Change Today Up No Change Down Up 14 6 16 Price Change Previous Day No Change Down 16 12 8 6 14 8
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