SOLUTION: a set of data items is normally distributed with a mean of 80 and a standard deviation of 9. Convert 80 to a z-score

Question 443722: a set of data items is normally distributed with a mean of 80 and a standard deviation of 9. Convert 80 to a z-score
Answer by oberobic(2304) (Show Source): You can put this solution on YOUR website!
The mean has a z-score of 0.
.
Technically, the z-score = (score - mean) / standard deviation.
But we do not know the standard deviation.
For a score of 80 in this case, the numerator = (80 - 80) = 0.
We know that 0 divided by any number is 0, so we don't really need to know the standard deviation.
.
Done.
RELATED QUESTIONS
A set of data items is normally distributed with a mean of 80 and a standard deviation of (answered by ewatrrr)

A set of data items is normally distributed with a mean of 80 and a standard deviation of (answered by ewatrrr)

A set of data items is normally distributed with a mean of 60 and a standard deviation of (answered by stanbon)

A set of data items is normally distributed with a mean of 150 and a standard deviation... (answered by ewatrrr)

A psychologist studied self-esteem scores and found the data set to be normally... (answered by stanbon)

A set of data items is normally distributed with a mean of 400 and a standard deviation... (answered by stanbon)

A psychologist studied self-esteem scores and found the data set to be normally... (answered by stanbon)

A set of data is normally distributed with a mean of 60. Covert the data item to a... (answered by jim_thompson5910)