Question 4

e Question 4 CNNBC recently reported that the mean annual cost of uto insurance is 965 dollars. Assume the standard deviation is 280 dollars. You take a simple random sample of 55 auto insurance policies. Find the probability that a single randomly selected value is less than 960 dollars. 960) = Find the probability that a sample of size n = 55 is randomly selected with a mean less than 960 dollars. < 960) = Enter your answers as numbers accurate to 4 decimal places. Calculator