A prototype from a hybrid vehicle manufacturer claims to get 50 miles per gallon (MPG). The manufacturer selects 14 prototypes from their fleet and drives the vehicles for fuel efficiency. The sample mean fuel efficiency for this sample was 53.3MPG and a standard deviation of 5.2MPG. Conduct a hypothesis test for the sample value at the α=0.05. What is the T-calculated value given the data? Report your answer to two decimal places and appropriate rounding.

Question

A prototype from a hybrid vehicle manufacturer claims to get 50 miles per gallon (MPG).  The manufacturer selects 14 prototypes from their fleet and drives the vehicles for fuel efficiency.  The sample mean fuel efficiency for this sample was 53.3MPG and a standard deviation of 5.2MPG. Conduct a hypothesis test for the sample value at the α=0.05.  What is the T-calculated value given the data? Report your answer to two decimal places and appropriate rounding.