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?

One proportion z test

Step-by-step explanation:

For this case, we can use the one proportion z test, this test is used when we have 2 categories and we want to see how significantly different is one from the other.

In this case, our two categories would be the toy prototype and the traditional toys.

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

answer: 8 years

step-by-step explanation:

the explanation is that in 8 years the child will be 20 and in 8 years the father will be 40 and 20 is half of 40.