Question

The scores on a test are normally distributed with a mean of 110 and a standard deviation of 22. What is the score that is 3 standard deviations below the​ mean?

Answer 1

Answer:

Step-by-step explanation:

If the mean is 110, and the standard devaition is 22,

1 standard dev. below the mean is 110-22

2  standard dev below the mean is 110-22-22

3 standard dev below the mean is 110-22-22-22

Hope that helps!

Answer 2

The score that is 3 standard deviations below the​ mean will be 44.

What is the z-score?

The z-score is a statistical evaluation of a value's correlation to the mean of a collection of values, expressed in terms of standard deviation.

The scores on a test are normally distributed with a mean of 110 and a standard deviation of 22.

Then the score that is 3 standard deviations below the​ mean will be

The first standard deviation below the mean will be

⇒ 110 - 22

⇒ 88

The second standard deviation below the mean will be

⇒ 110 - 22 - 22

⇒ 66

The third standard deviation below the mean will be

⇒ 110 - 22 - 22 - 22

⇒ 44

More about the z-score link is given below.

https://brainly.com/question/15016913

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