Could you explain how tosolve these questions:

A random sample of 625 10-ounce cans of fruit nectar is drawn from among all cans produced in a run. Prior experience has shown that the distribution of the contents has a mean of 10 ounces and a standard deviation of 0.10 ounce. What is the probability that the mean contents of the 625 sample cans is less than 9.995 ounces?

In a large population, 73% of the households have cable tv. A simple random sample of 100 households is to be contacted and the sample proportion computed. What is the probability that the sampling distribution of sample porportions is less than 70%?