The formula to calculate a z - score is z = ( x - ) /

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Question:

The formula to calculate a z

-

score is z

= (

-) / \

sigma

The formula to calculate x from a z

-

score is x

= +

\

sigma

On a Quiz, scores were normally distributed, with a mean of

81

and a standard deviation of

4 .

What is the probability that a randomly selected person has a quiz score less than

80 ?

(4

decimal places only, no leading

0,

NOT as a percent

)

Posted Date: May 18, 2024 03:05 PM

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The formula to calculate a z - score is z = ( x - ) /

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