Question 1162161
The mean of these values is 0.727 ppm with s=0.392 ppm
The half-interval for 99%CI is t df=6 0.995*s/sqrt (n), and t=3.707
the interval then is 0.549
the CI is then mean +/- that or (0.178, 1.276) units ppm.  Because 1 ppm is in the interval one may conclude that there is too much mercury in the sushi