2 years ago

You roll two number cubes. what is the probability of rolling double ones

Mathematics

1 answer:

tatiyna2 years ago

7 0

Answer:

1/36

Step-by-step explanation:

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Nady [450]

Answer: b) -0.625

<u>Step-by-step explanation:</u>

The formula for the z-score is:

$z=\dfrac{x-\mu}{\sigma}\\\\\bullet z \text{ is the z-score}\\\bullet x \text{ is the value}\\\bullet \mu \text{ is the mean}\\\bullet \sigma \text{ is the standard deviation}\\\\z=\dfrac{6-8}{3.2}\\\\\\.\ =\dfrac{-2}{3.2}\\\\\\.\ =\large\boxed{-.0625}$