Answer:
1 = r
Step-by-step explanation:
combine like terms
divide both sides by the same factor
and then simplify.
Answer:
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:
is there more to the question? this does not make seince
Step-by-step explanation: