According to Crestmont Research, the stock market has been up in 53.7% of all trading days over
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According to Crestmont Research, the stock market has been up in 53.7% of all trading days over the past 50 years. A stock is up if the price per share increases in value day-over-day. An investor wondered whether the proportion of days Amazon stock was up differed from the market. In a random sample of 200 trading days, she found Amazon stock was up 124 days. Does this sample evidence suggest the movement of Amazon stock is different from the stock market? Use the α = 0.05 level of significance.
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Because the data is a simple random sample np 0 1 p 0 20005371 ...View the full answer
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