Question

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 alphaequals0.05 level of​ significance?

Carpeted: 14.9, 11.2, 12.5, 11.8, 8.1, 8.8, 11, 10.8

Uncarpeted: 9,11,11.5, 11.3, 9.5, 4.6, 6.3, 13.8

Test Statistic= ____ (round to two decimal places as needed)

Now find the critical value. Select the correct choice below and fill in the answer box within your choice.

a) Ta = ___

b)Ta/2 = _____

Answer 1