Help please

A group of researchers is studying the impact of temperature on mood. They randomly assign two groups to spend 15 minutes either in a hot room (defined as 90 degrees) or a cold room (defined as 30 degrees). After the 15 minutes elapsed, a mood measure is completed by participants. Scores on the measure of mood range from 1-20, with higher scores indicating a better mood. Using two-tailed test with an alpha of .05, test for a difference between the groups. Conduct the t-test. Should the null hypothesis be rejected? Yes, the null hypothesis should be rejected. No, the null hypothesis should not be rejected