A coffee shop wants to know which of its fall specialty coffees is preferred, pu

Question

A coffee shop wants to know which of its fall specialty coffees is preferred, pumpkin spice or maple pecan. The store owner is undecided over which of two possible experiments they would use. In experiment 1, each customer evaluates both types of coffee. In experiment 2, each customers rates one type of coffee.

Experiment 1 Flip a coin for each customer to choose which type of coffee (s)he will taste. Then each person rates the coffee from 1 to 10.

Experiment 2 Flip a coin for each customer to choose which types (s)he will taste first. Ask which of the two types of coffee that (s)he prefers.

Which of the two given designs should the shop owner choose? Please explain your answer

Explanation / Answer

Solution:

The Experiment 2 can be considered as the stronger design. Since in the first experiment we need to design some scale which can be greatly vary between customers and may cause larger bias. However, the second one provide an easier way to find out which one the customers prefer.

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