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3 years ago

11

In one day, 18 people each withdrew $100 from an atm machine.What was the overall change in the amount of money in the atm machi

ne

1 answer:

tamaranim1 [39]3 years ago

7 0

Answer:

1,800??

Step-by-step explanation:

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2 years ago

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3 years ago

Read 2 more answers

In a certain normal distribution of scores, the mean is 30 and the standard deviation is 3. Find the z-score corresponding to a

vodomira [7]

Answer:

<h2>d. –2.33</h2>

Step-by-step explanation:

The z-score can be calcualted with the following formula

$Z=\frac{x-\mu}{\sigma}$

Where $\mu$ is the mean and $\sigma$ is the standard deviation.

So, in this problem, we have the following data

$x=23\\\mu =30\\\sigma=3$

Replacing all values in the formula, we have

$Z=\frac{23-30}{3}=\frac{-7}{3} \approx -2.33$

Therefore, the right answer is d.

8 0

3 years ago