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You are carrying out a market research study for Reliance Retail in Bhubaneswar. They want to know does the variation in sales can be explained in terms of variation in advertisement (sales discount) expenses in last six months Aug 20 Sep 20 Oct 20 Nov 20 Dec 20 Jan 21 Sales 20 25 40 50 55 60 (in lakhs) Sales 2 3 5 5 7 7 Discount (in lakhs) Write down null and alternate hypothesis for the above question. Carry out appropriate statistical tests to test your hypothesis for the above