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Name: A random sample of current stock prices of 40 medium sized companies h
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Description: A random sample of current stock prices of 40 medium sized companies had a mean price of $68.55 with a standard deviation of $45.13. A year earlier a stock market analyst had predicted that the price of medium sized companies would have a mean price

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A random sample of current stock prices of 40 medium sized companies had a mean price of $68.55 with a standard deviation of $45.13. A year earlier a stock market analyst had predicted that the price of medium sized companies would have a mean price of $80. You want to know if the average of current stock prices is significantly lower than $80.

At the 10 % significance level, what should you conclude?

In the context of this problem and your conclusion, what type of error is possible?

In the context of this problem, what would the error be?

In the context of this problem, what would be a possible consequence of this error?

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