CNNBC recently reported that the mean annual cost of auto insurance is 1017 dollars. Assume the standard deviation is 227 dollars. You take a simple random sample of 84 auto insurance policies. Find...

CNNBC recently reported that the mean annual cost of auto insurance is 1017 dollars. Assume the standard deviation is 227 dollars. You take a simple random sample of 84 auto insurance policies.


Find the probability that a single randomly selected value is less than 964 dollars.

P(X < 964)="">


Find the probability that a sample of size n=84n=84 is randomly selected with a mean less than 964 dollars.

P(M < 964)="">


Enter your answers as numbers accurate to 4 decimal places.