Based on sales over a six-month period, the five top selling compact cars are Chevy Cruze, Ford Focus, Hyundai Elantra, Honda Civic, and Toyota Corolla (Motor Trend, November 2, 2011). Base on total sales, the market shares among for these five compact cars were Chevy Cruze 25%, Ford Focus 21%, Hyundai Elantra 19%, Honda Civic 18%, and Toyota Corolla 17%. A sample of 400 compact car sales in Chicago showed the following number of vehicles sold.

Chevy Cruze 108
Ford Focus 92
Hyundai Elantra 64
Honda Civic 84
Toyota Corolla 52
Use a goodness of fit test to determine if the sample data indicate that the market shares for the five compact cars in Chicago are different than the market shares reported by Motor Trend. Using a .05 level of significance

The p-value is

What is your conclusion?

What market share differences, if any, exist in Chicago? Round your answers to two decimal places. Enter negative values as negative numbers.

Compact Car Hypothesized
Market Share Sample
Market Share Difference
Chevy Cruze .25
Ford Focus .21
Hyundai Elantra .19
Honda Civic .18
Toyota Corolla .17