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3 years ago

Use the given scale factor and the side lengths of the scale drawing to

Mathematics

1 answer:

ahrayia [7]3 years ago

4 0

Answer:

D for sure

Step-by-step explanation:

i dont know if you have time for this so i explain it in the comments if you need it

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A grocery stores studies how long it takes customers to get through the speed check lane. They assume that if it takes more than

Reptile [31]

The probability that a randomly selected customer takes more than 10 minutes will be 8.38%

Explanation

The average or mean $(\mu)$ is 8.56 minutes and standard deviation $(\sigma)$ is 1.04 minutes.

Formula for finding the z-score is: $z= \frac{X-\mu}{\sigma}$

So, the z-score for $X=$ 10 minutes will be.....

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Now, according to the standard normal distribution table, $P(z$ . So.....

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So, the probability that a randomly selected customer takes more than 10 minutes will be 8.38%

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3 years ago