Question

Sandora LLC is a global producer of juice. The company wants to launch a new product, but cannot decide if they want to go with peach or with orange flavor. To decide this, the company decides to organize tasting of the two versions by individuals who would rate the products on scale 0-100. Which scenario of the tasting below illustrates the case of comparing 2 populations with a matched sample?

Select one:

a. 20 randomly chose individuals try Orange and also Peach versions and rate both products

b. 10 invited experts try and rate Orange version and 10 different invited experts try and rate Peach version

c. 20 invited experts try Orange and also Peach versions and rate both products

d. 10 randomly chose individuals try and rate Orange version and 10 different randomly chosen individuals try and rate Peach version

Answer 1

Answer is

a) 20 randomly chosen individuals try Orange and Peach versions and rate both products

Note : As the sample observation should be randomly selected , the 20 individuals should be randomly selected , invited 20 guests would bring selection bias .

Secondly ,as we are to compare 2 populations with matched sample that implies the sample observation should be paired observation on same set of individuals . 20 individuals rate both Orange and Peach , thus we get paired observation for each individual .Thus we get 20 paired observation . This is called matched sample .