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The air pressure of each tire in a group is normally distributed with a mean of 3.9.2 pounds per square inch and a standard deviation of 2.5 psi attire in this group has a Z score of -1.8 find its air pressure

Sagot :

MrRoyalidn

The air pressure of the given tire is -0.58

How to determine the air pressure?

The given parameters are:

Mean = 3.92

Standard deviation= 2.5

z-score = -1.8

The z-score is calculated as

z = (score - mean)/standard deviation

In this case;

Score = Air pressure

So, we have

-1.8 = (Air pressure - 3.92)/2.5

Multiply both sides by 2.5

So, we have:

-4.5 = Air pressure - 3.92

Add 3.92 to both sides

Air pressure = -0.58

Hence, the air pressure of the given tire is -0.58

Read more about z-scores at:

https://brainly.com/question/25638875

#SPJ1

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