I conducted a study to determine if wearing a silly hat improved performance on a statistics test. My sample size was 42. Half of the participants wore a silly hat while taking the test, and half did not wear a silly hat. I was able to calculate the following statistics, but I need your help calculating myt-statistic to determine if the means of the two groups are significantly different.

Calculate at-statistic using the information provided below.Round to 2 decimal places.

1

b1= 1.38

SSx= 146.49

SSR= 78.51