Two samples of 6 and 5 items, respectively, gave the following data : Mean of tne first sample 40 Standard deviation of the first sample 8 Mean of the second sample 50 Standard deviation of the second...

Extracted text: Two samples of 6 and 5 items, respectively, gave the following data : Mean of tne first sample 40 Standard deviation of the first sample 8 Mean of the second sample 50 Standard deviation of the second sample 10 Is the difference of mean significant ? The value of t for 9 degrees of freedom at 5% level is 2.26.