In: Statistics and Probability
A restaurant's marketing department claims that 45% of customers prefer hamburgers, 41% of the customers prefer chicken sandwiches, and 14% of the customers prefer fish sandwiches. To test this claim, a random group of customers at a fast food chain were asked whether they preferred hamburgers, chicken sandwiches, or fish sandwiches, with the results shown below. Sandwich : Hamburgers Chicken Fish No. of customers: 40 16 8 Based on this sample data, is there evidence to reject the restaurant's claim at a significance level of α = .05?