A researcher wanted to determine if carpeted or uncarpeted rooms contain more bacteria The table shows the results for the number of bacteria per cubic foot for both types of rooms A normal probability plot and boxplot indicate that the data are approximately normally distributed with no outliers Do carpeted rooms have more bacteria than uncarpeted rooms at the α = 0.01 level of significance?

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Full data set Carpeted 10.9 7.9 6.1 Uncarpeted 9.8 9.2 9.3 2.9 14.3 11.6 5.1 10.7 8.7 9.6 11 11.6 11.9 Full data set Carpeted 10.9 7.9 6.1 Uncarpeted 9.8 9.2 9.3 2.9 14.3 11.6 5.1 10.7 8.7 9.6 11 11.6 11.9