An Environmental Group at a Local College Is Conducting Independent

Multiple Choice

An environmental group at a local college is conducting independent tests to determine the distance a particular make of automobile will travel while consuming only 1 gallon of gas.A sample of five cars is tested and a mean of 28.2 miles is obtained.Assuming that the standard deviation is 2.7 miles,find the 95% confidence interval for the mean distance traveled by all such cars using 1 gallon of gas.

A) [26.16 30.24]
B) [20.70 35.70]
C) [24.85 31.55]
D) [26.70 29.70]
E) [25.83 30.57]