You Want to Estimate the Average Gas Price in Your

Multiple Choice

You want to estimate the average gas price in your city for a litre of regular unleaded gasoline.You take a random sample of prices from 15 gas stations,recording an average cost of $1.27 and a standard deviation of $0.06.Create a 95% confidence interval for the mean price per litre of gas.

A) ($1.23,$1.41)
B) ($1.24,$1.38)
C) ($1.24,$1.30)
D) ($1.21,$1.43)
E) ($1.26,$1.38)