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Statistics A researcher claims that the average cost of men's athletic shirt is less than RM80. He selects a random sample of 36 pairs of

Statistics
A researcher claims that the average cost of men's athletic shirt is less than RM80. He selects a random sample of 36 pairs of shoes from a catalog and nds the following costs (in RM). (The costs have been rounded to the nearest RM). Is there enough evidence to support the researcher's claim at o = 0.10? (assume (I = 19.2) (1 5 marks)

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