. Weddell seals The weight of newborn Weddell seals is well described by a normal random variable with unknown mean and with standard deviation 22.6 lb. The weights of20 seals are recorded. Find the...

. Weddell seals The weight of newborn Weddell seals is well described by a normal random variable with unknown mean and with standard deviation 22.6 lb. The weights of20 seals are recorded. Find the probability that the sample mean falls within 10 lb of the true population mean.