A Random Sample of 25 Rats Was Fed a Diet

Multiple Choice

A random sample of 25 rats was fed a diet for a period of 4 weeks. The weight gain (in grams) was recorded for each rat. The average weight gain was 16.4 with a corresponding standard deviation of 3.0.
The P-value for testing the claim that this diet would increase weight by at least 15 grams would be

A) 0.005
B) 0.003
C) 0.014
D) 0.135