Use the Following Information for Questions

Multiple Choice

Use the following information for questions:
Did you wash your hands with soap before eating? You've undoubtedly been asked that question a few times in your life. Mom knows that washing with soap eliminates most of the germs you've managed to collect on your hands. Or does it? A student decided to investigate just how effective washing with soap is in eliminating bacteria. To do this she measured the bacterial count after using one of four different methods - washing with water only, washing with regular soap, washing with antibacterial soap, and spraying hands with antibacterial spray (containing 65% ethanol as an active ingredient) . SPSS output of the Kruskal-Wallis test is provided below.
-Based on information given in the output, what is the conclusion, using a significance level of 0.01?

A) The null hypothesis is not rejected: the population median bacterial counts after washing hands are not significantly different.
B) The null hypothesis is not rejected: the population median bacterial counts after washing hands are significantly different.
C) The null hypothesis is rejected: the population median bacterial counts after washing hands are not significantly different.
D) The null hypothesis is rejected: the population median bacterial counts after washing hands are significantly different.