Stoaches are fictional creatures that feed on funistrada.
According to Wikipedia, adult stoach weights are normally distributed, with a mean of 380 g and a standard deviation of 42 g.
You weigh a random sample of 65 stoaches, and find a sample mean weight of 380.7 g.
Assume Wikipedia is correct about the standard deviation. What is the p -value for a two-sided hypothesis test that Wikipedia is also right about the mean weight?
(Give your answer to 4 decimal places.)