CNNBC recently reported that the mean annual cost of auto insurance is 1024 dollars. Assume the standard deviation is 279 dollars. You take a simple random sample of 86 auto insurance policies. Find the probability that a single randomly selected value is less than 999 dollars. P(X<999) = Find the probability that a sample of size n = 86 is randomly selected with a mean less than 999 dollars. P(M<999) = Enter your answers as numbers accurate to 4 decimal places.