Question

Braxton is testing 2 different types of motor oil in his truck to determine which one lasts longer between oil changes. he purchases brand a and brand b from the auto parts store. he adds brand a to his truck and brand b to his sister's car. he then compares the color of the oil at the end of the week from both vehicles and determines that brand b goes longer between oil changes because it is lighter in color than that of brand a when he examines it. why is braxton's conclusion not valid?

Answer 1

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Braxton is testing 2 different types of motor oil in his truck to determine which one lasts longer between oil changes. He purchases Brand A and Brand B from the auto parts store. He adds Brand A to his truck and Brand B to his sister's car. He then compares the color of the oil at the end of the week from both vehicles and determines that Brand B goes longer between oil changes because it is lighter in color than that of Brand A when he examines it. Why is Braxton's conclusion not valid?


He added Brand B to his sister's car, not the truck.
He did not determine the starting color of the oil.
He purchased 2 different types of oil.
He added Brand A to his sister's car, not the truck.


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Answer 2

Answer:

The answer is A. He added Brand B to his sister's car, not the truck.

Step-by-step explanation:

He needed to add brand B to his truck also to keep the vehicles the same, since he added it to his sisters car the conclusions are not valid