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For 300 trading​ days, the daily closing price of a stock​ (in $) is well modeled...

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Basic Math

For 300 trading​ days, the daily closing price of a stock​ (in$) is well modeled by a Normal model with mean ​$197.49197.49 andstandard deviation ​$7.147.14. According to this​ model, what isthe probability that on a randomly selected day in this period thestock price closed as follows. ​

a) above ​$211.77211.77​?

​b) below ​$204.63204.63​? ​

c) between ​$183.21183.21 and ​$211.77211.77​?

​d) Which would be more​ unusual, a day on which the stock priceclosed above ​$210210 or below ​$190190​?

Answer & Explanation Solved by verified expert
3.6 Ratings (454 Votes)
We are talking in the period of 300 daysLet X represent the closing price of the stock Then wehaveaWe need to    See Answer
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