A researcher wanted to determine if carpeted or uncarpeted rooms Full data set contain more bacteria. The table shows the results for the number of Carpeted Uncarpeted bacteria per cubic foot for both types of rooms. A normal probability 9.1 12 8.6 10.9 11.5 5.5 plot and boxplot indicate that the data are approximately normally distributed with no outliers. Do carpeted rooms have more bacteria 7.6 11.7 7.1 10 10.1 13.9 than uncarpeted rooms at the a = 0.05 level of significance? 6.1 11.9 8.9 13.3