hypothesis testing

Question

The following data are the oxygen uptakes (milliliters) during incubation of a random sample of 15 cell suspensions.14.014.114.513.211.214.014.112.211.113.713.216.012.814.412.9Do these data provide sufficient evidence at the 0.05 level of significance that the population mean is not 12ml

Answer 1

Seems to me you should do a t-test and compare the mean of these data to 12 using 0.05 as the level of significance.  Are you asking us to do the t-test?