Question

Mattel wanted to examine how popular 7 new toy prototypes would be to 9 year old boys. Mattel brought in 40 boys who were nine years old and allowed them to play with each toy prototype for 15 minutes (so each prototype was available for 15 minutes). Other traditional toys were also in the room, and the percentage of time each boy played with the prototype was collected for each boy. What statistical test should be used of analyze this data?

Answer 1

We can use one proportion z test.

We have a sample size of n = 40

7 new toy prototypes are given to 40 boys to play for 15 minutes, but there were some traditional toys also. So, we will have proportion of boys who played with new prototype toys and who didn't played with new prototype.

Proportion= (number of boys who played with new prototype toys)/(total number of boys in the room)

this will give us the required proportion to test for any hypothesis statement.

Since we have only single sample or one sample of 40 boys, so one proportion z test is most suited statistical test for analyzing the given data.

One proportion z test is correct answer