Suppose the data shown here are the results of a survey to investigate gas prices. Ten service stations were selected randomly in each of two cities and the figures represent the prices of a litre of unleaded regular gas on a given day. Use the F test to determine whether there is a significant difference in the variances of the prices of unleaded regular gas between these two cities. Let α = 0.01. Assume gas prices are normally distributed.

Transcribed Image Text:

$1.338 1.326 1.322 1.303 City 1 $1.295 1.322 1.318 $1.318 1.318 1.278 $1.299 1.334 1.322 1.310 City 2 $1.287 1.349 $1.342 1.314 1.322 1.318