The average stock price for companies making up the S&P 500 is $30, and the standard deviation is $18.20 (Business Week, Special Annual Issue, Spring 2003). Assume the stock prices are normally distributed. (a) What is the probability that a stock price of a company will be more than $40 (to 4 decimals)? (b) What is the probability that a stock price of a company will be lest than $20 (to 4 decimals)?

The average stock price for companies making up the S&P 500 is $30, and the standard deviation is $18.20 (Business Week, Special Annual Issue, Spring 2003). Assume the stock prices are normally distributed. (a) What is the probability that a stock price of a company will be more than $40 (to 4 decimals)? (b) What is the probability that a stock price of a company will be lest than $20 (to 4 decimals)?

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.7: Probability

Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....

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