The selling prices of all stocks listed on the CDNX stockexchange are known to be normally distributed with a mean of $20and a standard deviation of $4. (a) What percentage of stocks havea selling price between $20 and $40? (b) If 167 of the stocks sellfor $26 or higher, how many stocks sell on the CDNX exchange? (c)What is the minimum selling price of the most expensive 5% ofstocks? (d) 2 out of every 3 stocks sells for higher than whatprice? (e) The prices of the middle 80% of stocks are between whattwo values?
