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1. The U.S. Department of Agriculture (USDA) uses sample surveys to produce important economic estimates. One pilot study estimated durum wheat prices in July and

1. The U.S. Department of Agriculture (USDA) uses sample surveys to produce important economic estimates. One pilot study estimated durum wheat prices in July and in January using independent samples of wheat producers in the two months. The data is given in Excel under WHEAT PRICES sheet.

image text in transcribed Although there is variation among prices within each month, the top four prices are all from July and the four lowest prices are from January. You will run a significance test to check that if the difference between months is just by chance. Youll use = 0.05 for significance test. Assume that the two Normal population distributions have the same standard deviation. Please use excel thank you a. Write out the null and alternative hypothesis associated with the research question. (2p) What type of statistical test will you use to answer the proposed research question? (Note: Is this a z-test or a t-test?

Price Month 6. 2335 July 6. 3215 July 6. 4457 July 6. 1488 July 6. 3079 July 5. 8976 January 6. 2064 January 6. 1278 January 6. 0468 January 5. 9692 January

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