12-5. Last year average monthly expenditure per household on a certain product was $12.97. Has there been
Question:
12-5. Last year average monthly expenditure per household on a certain product was $12.97. Has there been a statistically significant change in average household expenditure for this year? A sample of size n = 25 yielded
¯x = $11.22 with s = $0.95. Use α = 0.01.
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Related Book For 
Advanced Statistics From An Elementary Point Of View
ISBN: 9780120884940
1st Edition
Authors: Michael J Panik
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