The Australian Security Exchange (ASX) has more than 2000 listed companies as of 2020. The following table shows the average annual returns of the top ten companies. Company Average Annual Return (%) Archer Daniels Midland 10.5 American Airlines 7.1 Coca-Cola 10.6 Exxon Mobil Corp 13.3 General Electronic 12.6 Intel Corporation 22.8 Merck & Co 11.2 Procter & Gamble 12.8 Walmart Stores 9.7 Wendy's International 10.3   a)  Calculate the mean annual return of the above ten companies.  b)   List out the companies that are below the 40th Percentile (L40) c)   What is the standard error of this sample if the standard deviation of the population is 4.17?

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The Australian Security Exchange (ASX) has more than 2000 listed companies as of 2020. The following table shows the average annual returns of the top ten companies.

Company

Average Annual Return (%)

Archer Daniels Midland

10.5

American Airlines

7.1

Coca-Cola

10.6

Exxon Mobil Corp

13.3

General Electronic

12.6

Intel Corporation

22.8

Merck & Co

11.2

Procter & Gamble

12.8

Walmart Stores

9.7

Wendy's International

10.3

 

a)  Calculate the mean annual return of the above ten companies. 

b)   List out the companies that are below the 40th Percentile (L40)

c)   What is the standard error of this sample if the standard deviation of the population is 4.17?


 

 
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