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Using Probability Models: Mastery Test
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The Parkers are getting a new pet. Alan wants a cat, but his sister Jessica wants a dog. Both want a fair method to determine who gets to choose the
new pet
Alan devised a method using the given spinner.
• They will spin the arrow twice and record the outcomes.
• If the product of the outcomes is even, Alan gets to choose the new pet.
• If the product of the outcomes is odd, Jessica gets to choose the new pet.
4
Determine if the method is fair. If it is not, how can it be adjusted to make it fair?
OA
The method is not fair. This can be resolved by finding the product of the outcomes of three spins instead of two.
OB
The method is fair.
Ос.
The method is not fair. This can be resolved by using the same method with a spinner with only two same-sized sections instead of
four
OD
The method is not fair. This can be resolved by using the sum of the two outcomes instead of the product.
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