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Mathematics, 04.05.2021 16:40 PrestonTB

A survey was conducted by an independent price checking company to check an advertiser's claim that it had lower prices than its competitors. The average weekly total, based on the prices of approximately 95 items, is given for this chain and for its competitor recorded during four consecutive weeks in a particular month. Week Advertiser (5) Competitor ($) 1 254.28 256.11 2 240.55 255.68 3 235.90 255.20 4 234.15 26115
Is there a significant difference in the average prices for these two different supermarket chains? (Use a = 0,05. Use tri-competitory)
State the null and alternativelypotheses

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