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To compare the durabilities of two premium exterior house paints (one from House Depot and the other sold by KK-Mart), nine 4, × 6, panels of each paint were exposed to the elements for a six-month trial period.

(The arrangement of the panels was randomly determined.) At the end of the trial period the following reflectivity readings were obtained (higher values represent greater reflectivity):

HD:          9.6, 11.1, 11.6, 9.8, 8.9, 9.5, 10.2, 11.5, 10.1

KK-Mart:    9.4, 10.1, 9.2, 8.0, 10.1, 10.6, 7.2, 8.5, 9.5

For α = 0.05, determine if the paints exhibit equal reflectivity. What sampling assumptions are being made?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M91604293

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