Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day. A sample of 73 stocks traded on the NYSE that day showed that 10 went up. You are conducting a study to see if the proportion of stocks that went up is is significantly less than 0.3. You use a significance level of α=0.10α=0.10. What is the test statistic for this sample? Use ˆpp^ rounded to 4 decimal places. (Report answer accurate to 4 decimal places.) What is the p-value for this sample? (Report answer accurate to 4 decimal places.) This p-value leads to a decision to... reject the null accept the null fail to reject the null As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the proportion of stocks that went up is is less than 0.3. There is not sufficient evidence to warrant rejection of the claim that the proportion of stocks that went up is is less than 0.3. The sample data support the claim that the proportion of stocks that went up is is less than 0.3. There is not sufficient sample evidence to support the claim that the proportion of stocks that went up is is less than 0.3.

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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Question

Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day.

A sample of 73 stocks traded on the NYSE that day showed that 10 went up.

You are conducting a study to see if the proportion of stocks that went up is is significantly less than 0.3. You use a significance level of α=0.10α=0.10.

What is the test statistic for this sample? Use ˆpp^ rounded to 4 decimal places. (Report answer accurate to 4 decimal places.)
What is the p-value for this sample? (Report answer accurate to 4 decimal places.)

This p-value leads to a decision to...

reject the null
accept the null
fail to reject the null
As such, the final conclusion is that...
- There is sufficient evidence to warrant rejection of the claim that the proportion of stocks that went up is is less than 0.3.
- There is not sufficient evidence to warrant rejection of the claim that the proportion of stocks that went up is is less than 0.3.
- The sample data support the claim that the proportion of stocks that went up is is less than 0.3.
- There is not sufficient sample evidence to support the claim that the proportion of stocks that went up is is less than 0.3.