List the four factors that govern the power of an independent t test.

Exercises 12.11 Testing a test kit. Would you use a one-sample, paired-sample, or independent-sample t procedure in the following situations?

(a) A lab technician obtains a specimen of known concentration from a reference lab. He/she tests the specimen 10 times using an assay kit and compares the calculated mean to that of the known standard.

(b) A different technician compares the concentration of 10 specimens using 2 different assay kits. Ten measurements are taken with each kit. Results are then compared.