The average price of shares of companies that belong to the S & P500 is...
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Finance
The average price of shares of companies that belong to the S & P500 is $ 30 and the standard deviation is $ 8.20. Assume that stock prices are normally distributed.
1. What is the probability that the price of a company's stock is at least $ 40 ?
0.888
0.111
0.211
0.322
2. Of the total of 500 companies, how many companies are expected to have prices between $ 20 and $ 45 ?:
455
428
855
433
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