For all questions, use the following summary statistics and ANOVA table.

A climatologist wants to investigate possible Texas weather changes since 2012. She gathered data from 20 different cities for the month on January each year from 2012 to 2018 (data from January 2014 was not available). Below are the summary statistics and the ANOVA table from testing if all years had the mean January temperature for the 20 cities (5% significance).