Suppose that a stock is currently selling for $100. The change in the stock’s price during the nest year follows a normal random variablewith a meanof $10 and a standard deviationof $20. What is the probability(rounded to the nearest hundredth) that the stock will sell for at least $120 in a year’s time?
a. .31
b. .16
c. .25
d. .35
e. .40
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