Bus 233 In A Sample Of 800 Gas Stations

In a sample of 800 gas stations, the mean price for regular gasoline at the pump was $ 2. 857per gallon and the standard deviation was $0. 008 per gallon. A random sample of size 50is drawn from this population. What is the probability that the mean price per gallon is less than $2. 856?

BUS 233 In a sample of 800 gas stations

Question
In a sample of 800 gas stations, the mean price for regular gasoline at the pump was $ 2.857per gallon and the standard deviation was $0.008 per gallon. A random sample of size 50is drawn from this population. What is the probability that the mean price per gallon is less than $2.856?